Loyola College Question Paper 2009

Loyola College B.Sc. Statistics April 2009 Applied Stochastic Processes Question Paper PDF Download

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      LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – STATISTICS

YB 20

FIFTH SEMESTER – April 2009

ST 5400 – APPLIED STOCHASTIC PROCESSES

 

 

 

Date & Time: 28/04/2009 / 1:00 – 4:00  Dept. No.                                                   Max. : 100 Marks

 

 

SECTION – A

Answer all the questions                                                                                             (10 x 2 = 20 )      

               

  1. Define Stochastic Process with an example.
  2. What is the State Space of a Stochastic Process?
  3. Define Markov Process.
  4. Explain Independent Increments.
  5. Define Transition Probability Matrix.
  6. If P = is a Stochastic Matrix, fill up the missing entries in the Matrix.
  7. Define Accessibility of a State from another state.
  8. What is a Recurrent State?
  9. Define aperiodic Markov Chain.
  10. What is a Martingale?

SECTION – B

Answer any Five questions                                                                                          (5 x 8 = 40)    

  

  1. State the classification of Stochastic Processes based on time and state Space. Give an example for each type.
  2. Describe One-dimensional Random Walk and write down its Transition Probability Matrix.
  1. Let { Xn, n ³ 0} be a Markov chain with three states 0,1,2 and with transition

probability matrix

and the initial distribution Pr{ X0 = i}= 1/3, i = 0,1,2

Find    i)   Pr{X1 = 1 ½ X0 = 2},                          ii)   Pr{X2 = 2 ½ X1 = 1}

iii)   Pr{X2 = 2, X1 = 1 ½ X0 = 2},     iv)   Pr{X2 = 2, X1 = 1, X0 = 2}

  1. Show that Communication is an equivalence relation.
  2. Consider the following Transition Probability Matrix.  Using the necessary and sufficient condition for recurrence, examine the nature of all the three states.
  3. State any one property of Poisson Process.

 

 

 

 

  1. Classify the states of Markov Chain with Transition Probability Matrix

 

  1. State and stablish Chapman – Kolmogorov equations for a discrete time Markov chain.

 

SECTION – C

Answer any Two questions                                                                                       (2 x 20 = 40)        

              

  1. Derive the distribution of X(t), is a Poisson Process.                               (20)
  2. a). State and prove a necessary and sufficient condition for a state to be Recurrent .

b). Explain the Two-dimensional Symmetric Random Walk.                                   (10+10)

  1. (a) Let { Zi, i = 1,2…} be a sequence of independent identically distributed random variables   with mean 1.  Show that   Xn =   is a Martingale                                             (8)

(b). Consider a Markov Chain with Transition Probability Matrix

 

Find the equivalence classes and compute the periodicities of all the four states.           (12)

 

  1. a). Illustrate with an example Basic Limit Theorem of Markov chains..

b). Consider the following Transition Probability Matrix explaining seasonal changes on

successive day. (S – Sunny, C – Cloudy)

Today state

 

yesterday state

Compute the stationary probabilities and interpret the results.                            [10+10]

 

 

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Loyola College B.Sc. Statistics April 2009 Actuarial Statistics Question Paper PDF Download

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      LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – STATISTICS

YB 23

FIFTH SEMESTER – April 2009

ST 5404 – ACTUARIAL STATISTICS

 

 

 

Date & Time: 28/04/2009 / 1:00 – 4:00       Dept. No.                                                       Max. : 100 Marks

 

 

PART – A

 

ANSWER ALL THE QUESTIONS                                                             (10  x 2 = 20)

 

  1. Find the present value of Rs. 1000 receivable at the end of 50 years the rate of interest being 5% p.a.
  2. Write the formula for finding effective rate of interest given the nominal rate of interest.
  3. Write the two relations between  and .
  4. Define the two types of perpetuity.
  5. Explain  , .
  6. Define and .
  7. Explain life annuity, temporary life annuity.
  8. Explain the principle of life insurance.
  9. Explain the pure endowment assurance.
  10. Define the office premium.

PART – B

 

ANSWER ANY FIVE QUESTIONS                                                             (5 x 8 = 40)

 

  1. Two loans of Rs.500 each are made out to A three years ago and 2 years ago respectively and an interest of 6% p.a. was agreed upon.  At present A could make a repayment of Rs. 400.  He promises to clear the dues at the end of 2 years from now.  How much will he have to pay then?
  2. Derive the formula for  and .
  3. A has taken a loan of Rs.10,000.  He pays the level annual payment at the end of each year for 5 years.  What is the installment amount? What is the amount towards the principle in the third payment?  What is the principal outstanding at the end of 3 years?
  4. Find the accumulated value of an annuity due of Rs. 400 p.a. payable in equal quarterly installments for 12 years certain at nominal rate of interest of 7% p.a. convertible half yearly.
  5. Find the probability that
  • a life aged 35 will die between 45 and 50
  • a life aged 35 will die after 60
  • a life aged 35 will die in the 10th year from now.
  • A life aged 35 will survive another 10 years.
  1. On the basis of LIC table at 6% calculate the net annual premium ceasing after 15 years or at previous death for money back policy on (45) to secure the following benefits.
  • 1500 on survivance to the end of 5 years.
  • 1500 on survivance to the end of 10 years
  • 3000 on survivance to the end of 15 years
  • 6000 on death at any time within 15 years
  1. Derive the formula for present value when the successive instalments form an arithmetic progression.
  2. Explain the various types of life annuities.

PART – C

 

ANSWER ANY TWO QUESTIONS                                                           (2 x 20 = 40)

 

  1. a). Payments of (i) Rs 50 at the end of each half-year for the first 5 years followed by (ii). Rs 50 at the end of each quarter for the next 5 years, are made into an account to which interest is credited at the rate of 9% p.a. convertible half-yearly.  Find the accumulated value at the end of 10 years.

b). Provident fund (PF) deductions are made at the rate of Rs. 200 per month.                   Find the accumulated value at the end of 10 years, at a rate of interest 10% p.a.

( 10 + 10)

  1. a). Derive the formula for ,

b). A special policy provides for the following benefits.

(i). An initial sum of Rs. 10,000 with guaranteed annual additions of Rs.250                            for each years premium paid after the first if death occurs within the term                                   of assurance .

(ii). Rs 10,000 payable on survivance to the end of the term of assurance and

(iii). Free paid up assurance of Rs.10,000 payable at death after expiry of the                               term of assurance.  Calculate net annual premium under the policy on the                        life of (35) for 25 years.                                                    ( 10 + 10)

  1. a). Complete the following life table
Age
35 86137 742 .00842
36 – – .00885
37 – – –
38 – – –
39 – – .00969

b). Three persons are aged 30,35,40 respectively.  Find the probability that

(i). One of them dies before 45 while the others survive to age 55.

(ii). Atleast one of them attains age 65.

(iii). All of them die after 70.

(iv). None of them reach age 70.

(v). exactly 2 of them die before 45 and one survive to age 60.    ( 10 + 10)

  1. Write short notes on any three of the following

(i). Children deferred assurances  (ii). Double endowment assurances.

(iii). Equation of value                  (iv).  and

(v). Present value of perpetuities.                                         ( 10 + 10)

 

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Loyola College B.Sc. Statistics Nov 2009 Database Management Systems Question Paper PDF Download

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Loyola College B.Sc. Plant Biology and Biotechnology April 2009 Plant Physiology Question Paper PDF Download

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        LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

VE 16

FIFTH SEMESTER – April 2009

PB 5509 / 5500 – PLANT PHYSIOLOGY

 

 

 

Date & Time: 16/04/2009 / 9:00 – 12:00 Dept. No.                                                       Max. : 100 Marks

 

 

PART – A                                          (20 MARKS)

  1. CHOOSE THE CORRECT ANSWER.

 

  1. Dark reaction takes place in ________ of chloroplast.
  2. Thylakoid Stroma         c. Grana           d. Frets.
  3. Enzymes required for respiration are found in
  4. Glyoxysome b) Mesophyll   c) Mitochondria                      d) Peroxisome
  5. The End Product of Glycolysis is
  6. a) Pyruvic Acid b) Acetic Acid           c) Oxalo Acetic Acid                                        d) Phosphoglyceric  Acid
  7. Parthenocarpy is brought about by
  8. Cytokinin b) Ethylene      c) Gibberellins             d) Abscissic  Acid
  9. Chlorosis occurs due to the deficiency of
  10. Copper b) Iron             c) Phosphorous                        d) Boron

 

  1. STATE WHETHER THE FOLLOWING STATEMENTS ARE TRUE OR FALSE

 

  1. The first stable compound produced in Calvin cycle is 3-phosphoglyceric
  2. Photorespiration is called C3
  3. Auxins are used as weed killers.
  4. Vernalization shortens the vegetative period of the plants.
  5. Seeds, that, wait for suitable environmental condition to germinate are said to be QUIESCENT.

 

  • COMPLETE THE FOLLOWING:

 

  1. C4 plants exhibit _____________ anatomy of leaves.
  2. _________ is the precursor for Auxin.
  3. In CAM cycle the first product is _______ Acid.
  4. The germination by red-light and inhibition by far-red light involves the operation of a proteinaceous pigment called ___________.
  5. In the presence of light water gets dissociated into Hydrogen ions & Hydroxyl ions. This is called ___________.

 

  1. ANSWER THE FOLLOWING EACH WITH IN 50 WORDS.

 

  1. Define water potential?
  2. What are Quantosomes?
  3. What ate Cytochromes?
  4. What is the significance of Photo respiration?
  5. Explain?

PART – B                                          (5 x 8 = 40 marks)

ANSWER ANY FIVE OF THE FOLLOWING.  EACH NOT EXCEEDING 350 WORDS.

 

  1. What is Transpiration. What are its kinds. Also add notes on Antitranspirants.
  2. Explain Donnan’s Equilibrium.
  3. Explain the Glycolate Pathway.
  4. Explain Trans amination.
  5. What are the causes for Dormany.
  6. Explain Photoperiodism.
  7. Give a brief account of Bioassay for Auxins.
  8. Explain the effects Vernalization.

PART – C                              (2 X 20 = 40 MARKS)

ANSWER THE FOLLOWING, EACH NOT EXCEEDING 1500 WORDS.  DRAW DIAGRAMS WHEREVER NECESSARY.

 

 

  1. Write an essay on Biological Nitrogen Fixation.

 

(or)

Explain the Kreb’s cycle.

 

  1. Write down the practical uses of the hormones
  2. Auxins b) Gibberelins              c) Cytokinins                           d) Ethylene

 

(or)

Write an essay on cyclic photophos phorylation.  Mention a note on its significance.

 

 

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Loyola College B.Sc. Plant Biology and Biotechnology April 2009 Plant Diseases And Management Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

VE 20

SIXTH SEMESTER – April 2009

PB 6604 – PLANT DISEASES AND MANAGEMENT

 

 

 

Date & Time: 18/04/2009 / 9:00 – 12:00       Dept. No.                                                       Max. : 100 Marks

 

 

PART – A (20 MARKS)

 

  1. CHOOSE THE CORRECT ANSWER: (5 x 1 = 5)
  2. The most resistant virus, whose thermal deathpoint is 90oC for 10mts.
  3. Tungrovirus, Potatovirus, c. CMV,                      d. TMV
  4. It is an ulcer like lesion on fruit, tuber, leaves; as an outgrowth of cortical & epidermal cells.
  5. Scab Edema,        c. callus                       d. Tumour
  6. Teleutospores are
  7. Unicellular bicellular binucleate            c. unicellular bi nucleate          d. bicellular uninucleate
  8. The fruit becomes grayish and the skin hardens and c shrivels in
  9. Downy mildew on grapes citruscanker             c. little leaf of brinjal
  10. Tikka of groundnut
  11. The smut fungi belongs to the order.
  12. Ustilaginales, Uredinales   c. Peronosporales        d. Mucorales

 

  1. COMPLETE THE FOLLOWING : (5 x1 = 5)
  2. Parasitic algae in plant is ________________________.
  3. _________________ is a substance produced by a pathogen, which inhibits the development of defence reaction in plants.
  4. In response to wounding _______________ is the tissue overgrowth as a healing process.
  5. Clubroot of cabbage is caused by ______________.
  6. ___________________ are Necrotic lesions on the fruits.

 

  • STATE WHETHER THE FOLLOWING STATEMENTS ARE TRUE OR FALSE:                                                                                                       (5 x 1 = 5)
  1. Viroids are infective nucleic acids, similar to virus, and has a protein covering.
  2. Neem cake is very effective in reducing root knot incidence.
  3. Colletotriclurm falcatum can be effectively controlled by Bavistin, Topsin, and by Bordeaux mixture.
  4. Sulphur is a good fungicide.
  5. Plant pathogenic bacteria are mostly grain positive.

 

  1. ANSWER THE FOLLOWING IN 50 WORDS EACH: (5 x 1 = 5)
  2. Define Inoculam Potential.
  3. What are the symptoms of Blight Disease.
  4. What is Epidemiology?
  5. Describe bacterial gall.
  6. Mention any one symptom of viral Disease on plants?

 

PART-B

 

ANSWER ANY 5, EACH NOT MORE THAN 350 WORDS:                           (5 x 8 = 40)

 

  1. Explain Epidemics & Endemics.
  2. Write down Koch’s Postulates.
  3. Explain the inanimate causes of diseases in crops.
  4. Explain Hyper Trophy & Hyperplasia, Giving Examples.
  5. Write about Tungro disease of Rice.
  6. Write notes on Ergot of rye.
  7. Write notes on crop protection and Induced resistance.
  8. Write about the characters of Mycoplasmas.

PART-C

 

ANSWER THE FOLLOWING IN NOT MORE THAN 1500 WORDS EACH: (2 x 20 = 40)

 

  1. Explain the pathological life cycle of wilt of cotton.

OR

Explain the pathological life cycle of Rust of wheat

 

  1. Write about the Environmental impacts on Disease development and Epidemics.

OR

Write notes on 1. Plant Quarantine Principles.

  1. Disease Forecasting
  2. Seed and Soil Treatments.

 

 

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Loyola College B.Sc. Plant Biology and Biotechnology April 2009 Plant Biotechnology Question Paper PDF Download

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      LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

VE 18

FIFTH SEMESTER – April 2009

PB 5504 – PLANT BIOTECHNOLOGY

 

 

 

Date & Time: 24/04/2009 / 1:00 – 4:00  Dept. No.                                                      Max. : 100 Marks

 

 

PART – A      (20 marks)

  1. Choose the correct answer: (5 x 1 = 5)

 

  1. In plant tissue culture commonly used medium is
  2. S. medium b) Nitsch medium       c) B5 medium             d) white’s medium
  3. Laminar airflow cabinet consists of
  4. HAPA filter b) HEPA filter            c) HEAP filter d) HAPE filter
  5. Most suitable explant for the production of haploid plant is
  6. ovule b) anther          c) microspore   d) stamen
  7. Cyanobacteria are commonly called as
  8. Red algae b) Green algae c) Blue algae   d) Blue green algae
  9. The purified form of agar is
  10. agarose b) Sucrose       c) cellulose      d) alginate

 

  1. State the following statements are true or false: (5 x 1 = 5)

 

  1. T-DNA refers to transfer DNA.
  2. Sodium alginate is used as fusogent.
  3. Phenosafranin is used to identigy dead protoplast.
  4. pBR 322 is constructed from PUC.
  5. Agar-agar is extracted from the algae Gracilaria.

 

  • Complete the following: (5 x 1 = 5)

 

  1. Taq DNA polymerase enzyme is extracted from __________________.
  2. sodium alginate is extracted from _________________.
  3. Spirulina contains ________________ pigment.
  4. Knudson medium is used for _______________ culture.
  5. Single stranded DNA is present in ______________ virus.

 

  1. Answer all in about 50 words: (5 x 1 = 5)

 

  1. What is an explant?
  2. Define micropropagation.
  3. What is single cell protein?
  4. Mention any two algal seaweeds.
  5. What is chimeric DNA?

 

 

PART – B

 

Answer any FIVE, each within 350 words. Draw diagrams/ flow charts wherever necessary:  

                                                                                                                                       (5 x 8 = 40)

 

  1. Describe the Polymerase chain Reaction technology.
  2. Enumerate the significance of Blue Green Algae.
  3. Write notes on: a) artificial seed                       b)restriction enzyme
  4. Briefly explain the various physical method of sterilization techniques.
  5. Describe the genetic organization and function of chloroplast genome.
  6. Give the biotechnological importance of yeast.
  7. Write notes on phycocolloids.
  8. Define callus. Describe the types and add a note on its significance.

 

PART – C

 

Answer the following each within 1500 words only. Draw diagrams/ flow charts wherever necessary:                                                                                                                      (2 x 20 = 40)

 

 

  1. a) Mention the significance of tissue culture in plant science

(OR)

  1. b) Explain the genetic aspects involved in nitrogen fixation in Legume-Rhizobium

interaction.

  1. a) Give an account of somatic hybridization. Add a note on its significance.

(OR)

  1. b) What is rDNA technology? Describe any four gene transfer techniques used in rDNA

technology.

 

 

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Loyola College B.Sc. Plant Biology and Biotechnology April 2009 Microbiology Question Paper PDF Download

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         LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

VE 11

FOURTH SEMESTER – April 2009

PB 4504 – MICROBIOLOGY

 

 

 

Date & Time: 24/04/2009 / 9:00 – 12:00  Dept. No.                                                Max. : 100 Marks

 

 

                                PART –A                                                    (20 marks)

 

  1. Choose the correct answer (5×1=5)

 

  1. The scientist Known as Father of Microbiology is
  1. Louis Pasteur b. Alexander Fleming c. Robert Koch       d. Joseph Lister

 

  1. The structure associated with conjugation by bacteria are
  1. Pilus b. Flagella c. Mesosome         d. Cilia

 

  1. The organisms which grow at 37 °C are called
  1. Thermophiles b. Eosinophiles   c. Mesophiles   d. Psychrophiles

 

  1. The bacteriphage capsid is usually made of
  1. Lipid b. Protein c. Carbohydrate     d. Nucleic acid

 

  1. The organism used in the lactic acid production is
  1. Penicillium spp b. Aspergillus spp c. Lactobacillus spp   d. Bacillus spp

 

  1. State whether the following statements are True or False (5×1=5)

 

  1. Joseph Lister gave the world the first antiseptic – Carbolic acid .

 

  1. Treponema palladium is a spiral thick and rigid.

 

  1. Bacteriophages help in transduction.

 

  1. Griffith experiment proves the process of conjugation.

 

  1. Sewage pollution in drinking water is indicated by the presence of E.coli.

 

III. Complete the following                                                                      (5×1=5)

 

  1. ____________  is an example of acid fast bacterium.

 

  1. Log phase of growth is also known as ________________ phase.

 

  1. _______________ pigment present in Sulpur bacteria  helps trap sunlight.

 

  1. The expansion of BOD is ______________.

 

  1. The viruses are cultivated using ______________.

 

 

 

 

IV Answer the following within 50 words                                       (5×1=5)

Write short notes on

 

  1. Koch`s postulates

 

  1.  Spread plate  technique

 

  1. RUBISCO

 

  1. Virion

 

  1. VAM fungi

 

PART – B

Answer any FIVE of the following in about 350 words                       (5×8=40)

 

  1. Write the principle and method of Gram Staining .
  2. Explain ultra structure of bacteria.
  3. Describe the light reactions of photosynthesis in bacteria.
  4. Discuss whittakers  S Kingdom concept.
  5. Explain the concept of lysogeny.
  6. Elaborate on food spoilage caused by bacteria.
  7. Describe the waste water treatment by aerobic means.
  8. Write about the types of cuetue media based on physical state and chemical composition.

 

PART-C

Answer the following in about 1500 words                                          (2X20=40)

 

 

  • Write in detail the process of recombination in bacteria.

OR

  1. Describe different quantitative measurements used to Find bacterial growth.

 

30a. Explain the biogeochemical cycles present in bacteria.

OR

  1. Discuss in detail the structure, types and classification of bacteriophages.

                                             

 

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Loyola College B.Sc. Plant Biology and Biotechnology April 2009 Medical Microbiology Question Paper PDF Download

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      LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

VE 14

FIFTH SEMESTER – April 2009

PB 5405 / PB 5401 – MEDICAL MICROBIOLOGY

 

 

 

Date & Time: 28/04/2009 / 1:00 – 4:00  Dept. No.                                                    Max. : 100 Marks

 

PART A                                                                                                       (20 marks)

Answer All questions

I Choose the Correct Answer                                                                    (5 x 1 = 5 marks)

  1. Match A) Jenner B) Metchnikoff    C) Ehrlich     D) Twort with   i) Phagocytosis
  2. ii) Vaccination iii) Phage     iv) Chemotheraphy
  3. a) A-ii, B-i, C-iv,   D) iii          b) A-ii,   B-i,     C-iii,    D) iv
  4. c) A-ii, B-iv, C-i,     D) iii          d) A-ii,   B-iii,   C-iv,    D) i
  5. Statement A: Sulfonamides are semisynthetic drugs.

      Statement B: Mode of action is competitive inhibition.

  1. Statement Ais correct, but B is incorrect
  2. Statement A is incorrect, but B is correct
  3. Both A and B are correct
  4. d) Both A and B are incorrect
  5. Which of the following is a prominent resistant flora of vagina?
  6. E. coli             b. Staphylococcus        c. Lactobacillus           d. Salmonella
  7. The causal organism of chicken pox is a:
  8. Fungus b. Protozoan c. Bacterium                d. Virus
  9. The vector for malarial parasite is:
  10. Male Anopheles b. Female Anopheles        c. Male Qulex       d. Female Qulex

 

II State whether the following statements are True or False.                        (5 x 1 = 5 marks)

  1. Autoclave is used in dry heat sterilization.
  2. Nystatin is an antifungal antibiotic.
  3. Agglutination is the most striking of all test tube antigen-antibody reactions.
  4. Histoplasmosis is an example for systemic fungal infection.
  5. Typhus fever is a vector borne disease caused by Rickettsia.

III. Complete the following                                                                   (5 x 1 = 5 marks)

  1. Application of silver nitrate to the eyes of newborn to control ophthalmic ____________

is called Credes method.

  1. ___________ acremonium is the source for the antibiotic cephalosporin.
  2. Transmission of disease is otherwise known as _______________.
  3. Rice water stool is the most prominent symptom of _______________.
  4. Hydrophobia is associated with the disease _______________.

 

  1. Answer the following, each in about 50 words (5 x 1 = 5 marks)
  2. What is fumigation?
  3. Mention any two features of chemotherapeutic agents.
  4. Enumerate any two points about external defense mechanisms.
  5. Write down any two morphological characteristics of Mycobacterium.
  6. Name any two genera of dermatophytic fungi.

PART B                       (5 x 8 = 40 marks)

Answer any five, each within 350 words only. Draw diagrams and flowcharts wherever necessary.

  1. Enumerate the characteristics of an ideal antimicrobial chemical agent. Add a note an

phenol .

  1. Write about the salient aspects of antibiotic sensitivity tests.
  2. Distinguish between exotoxins and endotoxins in tabular form.
  3. Discuss the causal organism, symptoms and control of chicken pox.
  4. Bring out the differences between Syphilis and Gonorrhea based on causal organism,

symptoms and incubation period.

  1. Expand the following with a foot note each:
  2. a) HTST b) MIC                        c) NMF           d) HBV
  3. Define the following:
  4. a) Lockjaw b) Cold sterilization      c) Chemotherapy        d) Inflammation
  5. Write about the following:
  6. Symptoms and treatment of amoebiasis
  7. Causal organism of Tetanus
  8. Acids and alkalies as chemical agent of control
  9. Grieseofulvin

 

PART C                       (2 x 20 = 40 marks)

Answer the following, each within 1500 words only. Draw diagrams and flowcharts wherever necessary.

  1. a) Given an account on control of microbes by physical agents

(or)

  1. b) Give an outline of immunity. Add a note on blood as internal defense mechanism.
  2. a) Discuss the structure of HIV. Write about the symptoms, treatment and control of AIDS

(or)

  1. b) Describe in detail the causal organisms, symptom, lab diagnosis and prevention of

Cholera.

 

 

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Loyola College B.Sc. Plant Biology and Biotechnology April 2009 Immunology And Immuno Technology Question Paper PDF Download

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     LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

VE 48

FIFTH SEMESTER – April 2009

PB 5406 – IMMUNOLOGY AND IMMUNO TECHNOLOGY

 

 

 

Date & Time: 30/04/2009 / 1:00 – 4:00       Dept. No.                                                       Max. : 100 Marks

 

 

PART A (20 marks)

  1. Choose the correct answer (5 x 1 = 5)

 

  1. Edward Jenner is associated with vaccines against
  2. a) Rabies b) Chicken pox                        c) Small pox                d) Hepatitis
  3. Light chain has _____ amino acids
  4. a) 110 b) 220              c) 100                          d) 330
  5. The enzyme used in ELISA is
  6. a) protease b) lipase           c) peroxidase               d) amylase
  7. Which of the immunoglobin passes from mother into the foetus?
  8. a) Ig A b) Ig G                        c) Ig M                                    d) Ig E
  9. Hybridoma technology was invented by
  10. a) Kohler b) Hanstein                  c) Pasteur                    d) Lister

 

  1. State whether the following statements are true or false (5 x 1 = 5)

 

  1. Pasteur invented Rabies vaccine.
  2. Ig D is a pentamer.
  3. Precipitaion occurs with soluble antigens.
  4. Western blotting is used in HIV detection.
  5. In Monoclonal antibody production, Myeloma cells are used because they are immortal.

 

III. Complete the following                                                  (5 x 1  = 5 )

 

  1. Vaccine is derived from a Greek word which means ______.
  2. The immunoglobin IgE is associated with __________.
  3. The principle of blood grouping is _______ .
  4. The technique that involves transfer of proteins to membrane is ________
  5. On activation, the B cells becomes

 

  1. Answer the following, each in about 50 words (5 x 1= 5)

 

  1. Mention the contributions of Koch to the field of immunology.
  2. What is a paratope?
  3. Define zone of equivalence.
  4. Define agglutination.
  5. What are haemetopoietic stem cells?

 

 

PART  B

 

  1. Answer any five of the following, each answer not exceeding 350 words ( 5 x 8= 40)

 

  1. Mention the important milestones in immunology.
  2. Write notes on antigens.
  3. Discuss about national immunity schedule for newborn.
  4. Give an account of radioimmunoassay.
  5. Discuss briefly about immunoelectrophoresis.
  6. Discuss briefly about T lymphocytes.
  7. Explain about polyclonal antibodies and mention how are they produced?
  8. Write notes on humoral immunity.

 

PART C

  1. Answer the following, each answer not exceeding 1500 words.

(2 x 20 = 40)

  1. Write detailed notes on antibodies, their properties and structure

(or)

  1. Give a detailed account of vaccines and their types.

 

  1. Explain the process involved in Hybridoma technology

(or)

  1. Give a detailed account of Cell mediated immunity.

 

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Loyola College B.Sc. Plant Biology and Biotechnology April 2009 Herbal And Ethanobotany Question Paper PDF Download

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                           LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

VE 17

FIFTH SEMESTER – April 2009

PB 5511/5503 – HERBAL AND ETHANOBOTANY

 

 

 

Date & Time: 17/04/2009 / 9:00 – 12:00 Dept. No.                                                           Max. : 100 Marks

 

 

PART – A  (20  MARKS)

 

  1. CHOOSE THE CORRECT ANSWER (5 x 1 = 5)
  2. This plant has Anti Hepatotoxic activity.
  3. Piper b) Ocimum      c) Mentha        d) Phyllanthus amarus
  4. Ecliptin is the chemical component of
  5. Emblica b) Eclipta         c) Zingiber       d) Coriandrum.
  6. This reduces the temperature & fever
  7. Antipyretic b) Antioxident                        c) Antihydrotic           d) Antiseptic
  8. This is a thick paste of plant material and applied directly to the skin.
  9. Decoction b) Poultice       c) Tinctane      d) Slurry.
  10. This plant is very effective in the Treatment of Rheumatid arthirits.
  11. Datura b) Andrographis          c) Adathoda                 d) Ricinus.

 

  1. STATE WHETHR THE FOLLOWING STATEMENTS ARE TRUE OR FALSE. (5 x 1 = 5)

 

  1. The alkaloid vasicine is present in Vinca rosea.
  2. Inflammation is a natural response of the body to irritation.
  3. Eugenol is present in Ocimum sanctum.
  4. Linalool is a major component of Mentha.
  5. Expectorant causes expulsion of secretions from the brancho-pulminary mucosa.

 

III.  COMPLETE THE FOLLOWING                                                                                   (5 x 1 = 5)

 

  1. In tincture ______________ is used as an extracting liquid.
  2. The chemical component present in Datura is _________
  3. ________ is the simple way of extracting active principles of the herbs by the action of Hot water.
  4. In _________ the herbs are immersed in Fats or waxes.
  5. _______ fruit extract has antimutagenic activity.

 

  1. ANSWER ALL EACH IN ABOUT 50 WORDS.
  2. Define Pharmacognosy.
  3. What is Federal Food Drug and Cosmetic Act?
  4. What are Transquilizers?
  5. Explain – Azadiraclitin.
  6. “Volatile oils” – write short notes.

PART – B                                           (5 X 8 = 40 MARKS)

 

ANSWER ANY FIVE,  EACH WITHIN 350 WORDS ONLY

 

  1. Comment on Ayurveda system of Medicine.
  2. How do you prepare Gravel and slippery elm slurry.
  3. Mention the medicinal uses of Adhathoda and Andrographis.
  4. Write short notes on IPR.
  5. Write short notes on Herbal oils.
  6. Describe the organoleptic evaluation of Drugs.
  7. What are community herbal gardens?
  8. Comment on the Siddha system of Medicine.

PART – C                                           (2 X 20 = 40 MARKS)

 

ANSWER THE FOLLOWING EACH WITH IN 1500 WORDS ONLY.

 

  1. Write notes on the following medicinal plants.
  2. Datura metal and b. Zingiber officinale.

(OR)

Write an essay on the “Tribes of Tamilnadu”.

 

  1. Write an essay on “Ethnobotany” and “Its Scope”.

(OR)

Write an essay on Drug Adulteration.

 

 

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Loyola College B.Sc. Plant Biology and Biotechnology April 2009 Genetics And Plant Breeding Question Paper PDF Download

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     LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

VE 19

FIFTH SEMESTER – April 2009

PB 5506 – GENETICS AND PLANT BREEDING

 

 

 

Date & Time: 27/04/2009 / 1:00 – 4:00  Dept. No.                                                  Max. : 100 Marks

 

 

PART – A

  1. CHOOSE THE CORRECT ANSWER: 5 x 1 = 5           

 

  1. Eye colour in Drosophila is an Example of
  2. Multiple allele Lethal gene c. Epistatic gene          d. Supplementary gene
  3. This is formed when breaks occur in 2 chromosomes, simultaneously, & the broken chromosomes rejoin in a new manner,
  4. Inversion Translocation                      c. Replication  d. Duplication
  5. The smallest unit of recombination is
  6. Muton cistron         c. Recon          d. operon
  7. Pureline selection was 1st developed by
  8. Nilsson Bruce           c. Shull             d. Johannsen
  9. Translation occurs at the
  10. Ribosomes Mesosomes c. Dictyosomes d.Glyoxysomes

 

  1. STATE WHETHER THE FOLLOWING STATEMENTS ARE TRUE OR FALSE: 5 x 1 = 5        

 

  1. Plasma genes are present in the cytoplasm & transmit characters from one generation to another.
  2. Genetic exchange in Eukaryotes occurs by Transformation Transduction & conjugation.
  3. Klienfelter’s syndrome is genotypically and phenotypically male but bears many female characters.
  4. Nonsense codons are those for which there are no aminoacids.
  5. Down’s syndrome is also known as Mongolism.

 

  • COMPLETE THE FOLLOWING: 5 x 1 = 5           

 

  1. ____________ is a cluster of genes coding for a series of enzymes that work in an integrated biochemical pathway.
  2. In Transcription the information in the DNA is transferred to ______________.
  3. The smallest element, alteration of which can be effective in causing mutation is called ___________.
  4. The basic unit of DNA molecule is _____________.
  5. Post replicative repair mechanism, that may or may not involve rec A is termed _________ repair.

 

 

  1. ANSWER ALL, EACH IN ABOUT 50 WORDS: 5 x 1 = 5         

 

  1. What are Alleles.
  2. Mention the law of Independent Assortment
  3. Define Heterosis.
  4. What are Lethel genes.
  5. Define Codominance.

PART – B

ANSWER ANY 5, EACH WITHIN 350 WORDS ONLY:                                  5 x 8 = 40 Marks

 

  1. Write down the conservative method of Replication.
  2. Explain point Mutation.
  3. Explain Darwinism.
  4. What is Mismatch repair.
  5. Explain clonal selection.
  6. Write down the centres of diversity and the origin of cultivated plants.
  7. Explain sex determination in plants.
  8. Write about Quantitative Inheritance.

PART – C

ANSWER THE FOLLOWING EACH IN 1500 WORDS:                     2 x 20 = 40 Marks

 

  1. Describe the molecular structure of DNA.

(or)

Write about DNA repair mechanisms.

 

  1. Explain the selection Methods in Plant Breeding – Mass and Pure line selection.

(or)

Write an essay on chromosomal aberrations.

 

 

 

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Loyola College B.Sc. Plant Biology and Biotechnology April 2009 Fermentation Technology Question Paper PDF Download

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         LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

VE 22

SIXTH SEMESTER – April 2009

PB 6606 / 6601 – FERMENTATION TECHNOLOGY

 

 

 

Date & Time: 23/04/2009 / 9:00 – 12:00   Dept. No.                                                   Max. : 100 Marks

 

                                   PART –A                                                    (20 marks)

 

  1. Choose the correct answer (5×1=5)

 

  1. The industry which uses the principle of fermentation is
  1. Food industry b. Paint industry c. Chemical industry   d. None

 

  1. The microbes are preserved in small laboratories by
  1. Daily Subculture b. Refrigeration c. Boiling        d. None

 

  1. The antifoam agent used  in fermentor is
  1. Soap b. Salt c. Lard oil    d. Vanaspati

 

  1. In the fermenter aeration is done by
  1. Sparger b. Agitators c. Impellors             d.  All

 

  1. The salt used in precipitation of enzymes is
  1. Ammonium sulphate b. Calcium sulphate c. Nickel sulphate   d. None

 

  1. State whether the following statements are True or False (5×1=5)

 

  1. Alcohol industry is the most profitable industry.

 

  1. Parasexual cycle in yeast is useful for strain improvement.

 

  1. Steam is the best sterilant for sterilisation of a fermenter.

 

  1. Sonication cannot be used for cell disruption.

 

  1. Biosensors are a boon to Fermentation industry.

 

III. Complete the following                                                                      (5×1=5)

 

  1. ______________ is a fermented dairy product.

 

  1. The sterilisation of heat sensitive substances is done by _________________.

 

  1. Cryopreservation is carried out at ____________°C temperature.

 

  1. The change in pH in media in the Fermentor is indicated by __________.

 

  1. The mixing of components of media in a fermentor is done by the _________ .

 

 

 

 

IV Answer the following within 50 words                                       (5×1=5)

Write short notes on

 

  1. Solvent extraction

 

  1.  DO probe

 

  1. Valves of fermentor

 

  1. Fed batch cultures

 

  1. Biotransformation

 

PART – B

Answer any FIVE of the following in about 350 words                       (5×8=40)

 

  1. Write on range of Fermentation processes available for industry.
  2. Explain Sterilization and its importance in fermentation.
  3. Describe the body construction and basic functions of each part of fermentor.
  4. Describe computerized control system available in fermentor
  5. Explain the use of chromatography in down stream processing
  6. Elaborate on the importance of effluent treatment after fermentation.
  7. Describe the scope and importance of recombinant products in fermentation.
  8. Precipitation is an important step in purification- Justify

 

PART-C

Answer the following in about 1500 words                                          (2X20=40)

 

  1. a. Write in detail about the different types of fermentors.

OR

  1. Describe the methods used in preservation of isolated cultures.

 

  1. a. Explain the filtration and centrifugation in Bioprocess industry.

OR

  1. Discuss in detail the Microbial growth kinetics and its use in fermentation .

 

 

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Loyola College B.Sc. Plant Biology and Biotechnology April 2009 Environmental Biotechnology Question Paper PDF Download

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     LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

VE 21

SIXTH SEMESTER – April 2009

PB 6605 / 6602 – ENVIRONMENTAL BIOTECHNOLOGY

 

 

 

Date & Time: 21/04/2009 / 9:00 – 12:00    Dept. No.                                                       Max. : 100 Marks

 

 

PART –A                                                    (20 marks)

 

  1. Choose the correct answer (5×1=5)
  1. The filters used in Laminar Air Flow is
  1. Seive filters b. HEPA filters c. Sand filters     d. Filter paper

 

  1. Increase in deposit of pollutant in the members of food web is called
  1. Biomagnification b. Biosorption c. Biostimulation    d. Biodegradation

 

  1. Dinococcus radiodurans is able to use
  1. Heavy metal b. Pesticide c. Hydrocarbon    d. Radionuclides

 

  1. The substances difficult to degrade are called
  1. Reversible b. Remedial c. Removable         d. Recalcitrant

 

  1. The organism present in Trickling filter includes
  1. Thiobacillus spp b. Mycobacteria spp c. Bordetella spp d. Zooglea spp

 

  1. State whether the following statements are True or False (5×1=5)
  1. Sulphurdioxide causes chlorosis in plants.

 

  1. Chlorine in PCB is harmless to microbes.

 

  1. Iron ore leaching is done using Thiobacillus ferroxidans.

 

  1. EPA is Environment Protection Act.

 

  1. Psuedomonas have the enzyme monoxygenases.

 

III. Complete the following                                                                      (5×1=5)

  1. ______________ is an unconventional energy resource.

 

  1. Chemical treatment of sewage is done using _________________.

 

  1. The best way to remove agricultural waste is _________________.

 

  1. Removal of waste using plant roots is called ______________.

 

  1. The normal depth of anaerobic pond is _____________.

 

 

IV Answer the following within 50 words                                       (5×1=5)

Write short notes on

  1. Biofilm

 

  1. Chernobyl disaster

 

  1. Pesticide as xenobiotic substance

 

  1. Methane

 

  1. Mercury pollution

 

PART – B

Answer any FIVE of the following in about 350 words                       (5×8=40)

 

  1. Write purification of air
  2. Explain metal transformation.
  3. Describe the Ex-situ bioremediation.
  4. Describe the nonconventional energy resources
  5. Explain the concept of Biomineralisation.
  6. Elaborate on removal of oil spills using microbes.
  7. Describe the Anaerbic digestion of waste.
  8. What is phytoremediation?

 

PART-C

Answer the following in about 1500 words                                          (2X20=40)

 

  1. a. Write in detail the use of microbes in Bioremediation.

OR

  1. Describe i. Trickling filter
  2.          Activated Sludge process

 

  1. a. Explain the pathway for PCP and PCB degradation.

OR

  1. Discuss i. Bioleaching
  2. Biocorrosions

 

 

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Loyola College B.Sc. Plant Biology and Biotechnology April 2009 Biostatistics Question Paper PDF Download

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   LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & BIOTECHNOLOGY

YB 10

THIRD SEMESTER – April 2009

ST 3203 / 3201 – BIOSTATISTICS

 

 

 

Date & Time: 16/04/2009 / 1:00 – 4:00         Dept. No.                                                       Max. : 100 Marks

 

 

 

SECTION A

Answer all questions.                                                                        (10 x 2 = 20)

 

  1. What is meant by quantitative and qualitative data?
  2. Mention any two properties of arithmetic mean.
  3. Define: Independent events.
  4. Let A, B and C be three mutually exclusive and exhaustive events with           P(A) = P(B) / 2 , P(B) = 3 P(C) . Find P(A), P(B) and P(C).
  5. What is the probability of obtaining three heads in a toss of four unbiased coins?
  6. Let X be a random variable with the following probability distribution

X:        -1         0          1          2

P[X=x]:        0.3       0.2       0.2       0.3

Find the distribution of Y = X2.

  1. Mention any two uses of t-distribution.
  2. Define the term ‘Statistic’.
  3. Interpret the following confidence interval:

Pr(1.2 < μ < 2.7) = 0.99

  1. What are Type 1 error and Type II error?

 

 

SECTION B

Answer any five questions.                                                         (5 x 8 = 40)

 

  1. Calculate mean, median and mode for the following data

Weight: 50-55    55-60    60-65    65-70    70-75    75-80

No. of patients:    10          8           14          9           5            2

  1. Explain the concept of correlation and regression with an example each.
  2. Let X be a normally distributed random variable with mean 57 and variance 20. Find   a) P(X>62)
  1. b) P(42<X<50)
  2. c) P(X< 70)
  1. Explain the various steps involved in hypothesis testing.
  2. The following data gives the age of 10 randomly chosen patients admitted in the intensive care unit of a hospital in a given week.

40, 52, 48, 63, 37, 24, 49, 58, 69, 75.

Can it be concluded, based on the above information, that the mean age of

all the patients admitted in the given week is more than 55? Test at 5 %  level.

  1. Of the 215 subjects who were black, 58 had diabetes mellitus. Of the 1140 white subjects, 217 had diabetes mellitus. Construct a 90 % confidence interval for the difference between the two population proportions. What are the relevant population proportions?
  2. Explain the Mann – Whitney test to test the equality of median of two populations.
  3. Fit a binomial distribution to the following frequency distribution.

X:        0          1          2          3          4

f:        12        15        18        14        10

 

                                                       SECTION C

Answer any two questions.                                                   (2 x 20 = 40)

 

  1. a.) Draw a Box – Plot and examine the Skewness of the following
    frequency  distribution:

No. of children per family:     0          1          2          3          4          5         6                                                     No. of families:           7          10        16        25        18        11       8

b.) The following data gives the Blood Pressure (Y) and age (X) of 10
patients:

Y:        78        64        89        94        88        72        90        82

X:        28        45        52        49        37        41        56        24

Fit a linear regression of Y on X and obtain the least square estimates of
the intercept and slope parameters. Also interpret the results     (8+12)

 

  1. a.) The following data (Sample A and Sample B)denotes the age (in

months) at which infants walked alone from two populations A and B.

Sample A:       9.5       10.5     9.0       9.75     10.0     13.0     10.0                                                     13.5      10.0     9.5       10.0     9.75

Sample B:        12.5     9.5       13.5     13.75   12.0     13.75   12.5                                                     9.5      12.0     13.5     12.0     12.0

Do the above sample data support the hypothesis that the mean age at
which the infants walked alone is different in the two populations? Test

at 5% level.

b.) Consider a population with N=6 units, the values being 30, 22, 20, 15,

24 and 20. Select all possible samples of size 2 without replacement

and verify whether the sample range is an unbiased estimator for the

population range.                                                                        (12+8)

 

  1. ) A sample of college students participated in a study designed to

evaluate the level of college students’ knowledge of a certain group of

common diseases. The following table shows the students classified by

their major field of study and level of knowledge of the group of

diseases.

Knowledge of Diseases

Major               Good               Average           Poor

Premedical      85                    58                    30

Other               19                    29                    48

Do these data suggest that there is a relationship between knowledge of
the group of diseases and major field of study? Test at 5 % level.

b.) Draw a histogram and a frequency polygon for the following frequency
distribution.

Class Interval: 10-19   20-29   30-39   40-49   50-59   60-69

frequency:     4         66        47         36        12        4      (12+8)

 

  1. A remotivation team in a psychiatric hospital conducted an experiment to
    compare five methods for remotivating patients. Patients were grouped
    according to the level of initial motivation. The team assigned each patient
    a composite score as a measure of his or her level of initial motivation. The
    results were as follows:

Remotivation method

Level of initial motivation      A         B         C         D         E

Nil                   58        68        60        68        64

Very low         62        70        65        80        69

Low                 67        78        68        81        70

Average           70        81        70        89        74

Do these data provide sufficient evidence to indicate a (i) difference in

mean scores among methods and (ii) mean scores among level of initial

motivation? Test at 5 % level.

 

 

 

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Loyola College B.Sc. Plant Biology and Biotechnology April 2009 Biophysics Question Paper PDF Download

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     LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

VE 49

FIFTH SEMESTER – April 2009

PB 5408 – BIOPHYSICS

 

 

 

Date & Time: 04/05/2009 / 1:00 – 4:00       Dept. No.                                                       Max. : 100 Marks

 

 

 

PART A                                       (20 marks)

Answer All questions

 

I Choose the Correct Answer                                                                  (5 x 1 = 5 marks)

 

  1. In industries ultrafiltration is used to separate ____________.
  2. biomolecules b. carbohydrates          c. proteins                    d. all the above

 

  1. __________is the number of moles of a solute dissolved in a liter of solution.
  2. molality b. molarity                  c. normality                 d. PPM

 

03.___________ is used to visualizing DNA in UV light.

  1. agarose            b. ethidium bromide                 c. SDS             d. silver nitrate

 

  1. In Fluorescence microscope ____________ stain is used for lipid.
  2. cellofluor white b. Nile blue      c. acridine orange        d. none of the above

 

  1. __________ are the most dangerous form of radiation emitted by a nuclear explosion.
  2. alpha rays b. gamma rays             c. beta rays                  d. x rays

 

II State whether the following statements are True or False              (5 x 1 = 5 marks)

  1. Brownian movement may be used to distinguish between solutions and colloids.
  2. Hydrogen ion concentration is the number of moles of hydrogen ions per cubic

decimeter.

  1. Size exclusion chromatography is also called as affinity chromatography.
  2. Gases flow much easier than liquids or solids.
  3. Apoptosis is also called as programmed cell death.

 

III. Complete the following                                                                   (5 x 1 = 5 marks)

  1. __________ in the air is an essential gas for life.
  2. pH is a measurement of the concentration of __________ ions in a solution.
  3. Agarose is a linear polymer extracted from ______________.
  4. The ability of the medium to reduce the light velocity is called ___________.
  5. Unnatural cell death is called as _______________.

 

 

 

 

  1. Answer all, each in about 50 words  (5 x 1 = 5 marks)

 

  1. What is Brownian movement?
  2. Define Osmosis.
  3. What is Adsorption?
  4. Define refraction.
  5. Write notes on cell death.

PART B                       (5 x 8 = 40 marks)

Answer any five, each within 350 words only. Draw diagrams and flowcharts wherever necessary.

 

  1. Explain the important characteristics and theories of gases.
  2. Write detailed notes on percentage of concentration.
  3. Briefly describe the principles of Ion exchange chromatography and its uses.
  4. Write the principle, mechanism and uses of colorimetry.
  5. Emulsions and suspensions.
  6. Describe the following
  7. i) Wave nature of light.
  8. ii) Interference.
  9. Write notes on radioimmunoassay and its uses.
  10. Mention the biological effects and uses of radiation.

 

PART C                       (2 x 20 = 40 marks)

 

Answer the following, each within 1500 words only. Draw diagrams and flowcharts wherever necessary.

 

  1. Write notes on the followings
  2. i) Different types of chromatography.
  3. ii) 3 important theories of acids and bases.

iii) Immunofluoresence.

OR

  1. b) Elaborately describe the principle and uses of Gel electrophoresis.

 

  1. a) Write detailed notes on two types of electron microscope.

OR

  1. b) Write notes on the following
  2. i) Properties of colloids and their types with examples.
  3. ii) Affinity chromatography and its uses.

 

 

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Loyola College B.Sc. Plant Biology and Biotechnology April 2009 Bioinformatics Question Paper PDF Download

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     LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

VE 15

FIFTH SEMESTER – April 2009

PB 5407 / PB 5404 – BIOINFORMATICS

 

 

 

Date & Time: 04/05/2009 / 1:00 – 4:00       Dept. No.                                                       Max. : 100 Marks

 

 

PART – A

  1. Choose the correct answer. (5 x 1 = 5)
  1. Multiple sequence alignment is an extension of ——– alignment.
  1. Pairwise Local           c. Global          d. Random

 

  1. Exon is a ————- sequence
  1. Nucleic acid Protein         c. Pairwise       d. Multiple

 

  1. Splice sites are predicted using —————-.
  1. Netgene2 Nebcutter2.0           c. Signalp        d. Pfam

 

  1. Blastx is used to search ———- database using a translated nucleic acid query.
  1. Protein Nucleic acid            c. Translated    d. mRNA

 

  1. Pfam is a collection of  ————- alignment.
  1. Multiple sequence Single          c. Protein         d. Nucleotide

 

  1. State whether the following statements are true or false. (5 x1= 5)
  1. Dot plot is a graphical method for comparison of two biological sequences.
  2. Global alignment is used to align every residue in all sequences.
  3. Pairwise – local alignment is used to find the best matching sequences.
  4. ClustalW is an sequence alignment software.
  5. Intron is also termed as non-intervening sequences.

 

III. Complete the following.                                                               (5 x 1 = 5)

  1. Exon contains a part of the ————— that codes for a specific sequence.
  2. FASTA format also termed as ——————— format.
  3. MEDLINE  can be expanded as ———————.
  4. RASMOL is a —————- visualizing tool.
  5. ————- makes extensive use of sequence alignments in the construction and interpretation of species relationships.

 

  1. Answer the following in about 50 words each. (5 x 1=5)

Define / Explain:

  1. Sticky end cut
  2. Motif
  3. Splice site
  4. DIP
  5. Genscan

 

 

PART – B

Answer any FIVE of the following, each not exceeding 350 words.                        (5 x 8 =40)

 

  1. Write notes on the biological sequences of nucleotides and proteins.
  2. List out the applications of alignments and add a note on Needleman and Wunch algorithms.
  3. Explain about FASTA and its types.
  4. Discuss about the software used for the prediction of transition tools.
  5. Write notes on Pfam and Prosite profiles.
  6. Explain about different post translational modifications.
  7. Describe the usefulness of RASMOL.
  8. With illustrations explain DOT-PLOT.

 

PART – C

Answer any TWO of the following, each not exceeding 1500 words.          (2 x 20 = 40)

 

  1. (a) Explain about Homology modeling, PubMed, Medline and Swissmodel.

Or

(b) Discuss on how to identify Motifs and Restriction sites.

  1. (a) Explain Pairwise – Local alignment, ClustalW and Global alignment.

Or

(b) Write notes on softwares used in biological databases.

 

 

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Loyola College B.Sc. Plant Biology and Biotechnology April 2009 Bioinformatics – II (Genomics & Proteomics) Question Paper PDF Download

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         LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

VE 10

FOURTH SEMESTER – April 2009

PB 4208 – BIOINFORMATICS – II (GENOMICS & PROTEOMICS)

 

 

 

Date & Time: 27/04/2009 / 9:00 – 12:00  Dept. No.                                               Max. : 100 Marks

 

 

PART A

Answer all the questions                                                                              (20 marks)

 

I      Choose the correct answer                                                                  (5 x1  = 5)

 

  1. C score determines the ______
  2. a) signal peptide b) signal peptide cleavage site score
  3. c) mature protein d) protein secondary structure.

 

  1. ______ is a database of interacting proteins.
  2. a) Protein blast b) DIP           c) proteomedb               d) ncbi

 

  1. _______is a database of metabolic pathways
  2. a) kegg b) ncbi            c) enzymedb                d)TIGR

 

  1. _____ is the software used to identify splice sites.
  2. a) nebcutter b) BDGP         c) spliceview    d) mapviewer.

 

  1. _____are GC rich regions in genomes.
  2. a) CpG islands b) splice sites   c) restriction sites      d) promoter regions

 

 

 

II State True or False                                                                                    (5 x 1  =5)

 

  1. CATH is a database of protein structures.
  2. Genomic blast can be used to compare proteins.
  3. Genscan is used to predict restriction sites.
  4. Any number of init exons can be present in genes.
  5. DIP is used in protein protein interaction studies.

 

III  Complete the following                                                                (5 x 1 = 5)

 

  1. _____is the region present 100 bp upstream the genes.
  2. CpG islands can be used as a clue in _________.
  3. Chemical method of DNA sequencing was done by _____ and ______.
  4. ______ is used for gene
  5. ______ is used to identify intron exon boundaries..

 

 

IV Define the following                                                          .             (5 x  1 = 5)

 

  1. What is Genome ?.
  2. What are Donor sites ?.
  3. What is INTR .
  4. Define :Y score.
  5. Explain DIP-blast.

PART B

 

Answer any Five of the following , each in about 350 words.                 (5 x 8 =40)

 

  1. Write short notes on the types of exons..
  2. Discuss about CpG islands and their importance.
  3. Explain promoter 2.0 and its output format.
  4. Give a brief note on BDGP analysis tool and its applications.
  5. Discuss the role of computers in the field of biology.
  6. Explain the database of drugs and metabolic pathways.
  7. Discuss about electrophoresis and its applications.
  8. Explain mapviewer and its applications.

PART C

 

Answer  the following  in about 1500 words.         (2 x 20 = 40)

Draw diagrams / flowcharts wherever necessary.

 

 

29.a) Explain the DNA sequencing method.

Or

  1. b) Explain the Database of interacting proteins and its applications

 

30.a) Discuss the software used to predict the signal used for transfer of proteins to

their site of action.

Or

b). Discuss about Genscan and its output format and interpret the following results.

 

Gn.Ex Type S .Begin …End .Len Fr Ph I/Ac Do/T CodRg P…. Tscr..—– —- – —— —— —- — — —- —- —– —– ——  1.00 Prom +    658    697   40                              -3.65 1.01 Init +   2877   3004  128  2  2   74   37    96 0.196   2.78 1.02 Term +   8092   8218  127  1  1   67   42   102 0.105   0.27 1.03 PlyA +   8929   8934    6                               1.05

 

 

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Loyola College B.Sc. Plant Biology and Biotechnology April 2009 Angio. Taxonomy & Embryology Question Paper PDF Download

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     LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

VE 07

THIRD SEMESTER – April 2009

PB 3502 – ANGIO. TAXONOMY & EMBRYOLOGY

 

 

 

Date & Time: 06/05/2009 / 9:00 – 12:00  Dept. No.                                                 Max. : 100 Marks

 

 

 

PART – A    (20 MARKS)

  1. CHOOSE THE CORRECT ANSWER: 5 x 1 = 5           
  2. General Plantarum is the work of _____
  3. Linnaeus b) Bentham & Hooker c) Engler          d) Prantle
  4. In Dicots, the ovule is attached to the placenta, by a short stalk known as,
  5. Funicle b) Nucellus      c) Hilum          d) Chalaza
  6. Androgynophone is seen in the family.
  7. Poaceae b) Amaranthaceae      c) Euphorbiaceae        d) Capparidaceae
  8. Ornithophily is pollination by
  9. Birds b) Bats             c) Ants             d) Wind
  10. In Poaceae, the fruit is a) Achene        b) Caryopsis    c) Nuts               d) Utricle

 

  1. STATE WHETHER THE FOLLOWING STATEMENTS ARE TRUE OR FALSE: 5 x 1 = 5        
  2. The pollentube enters the ovule at the chalazal end of the ovule is called Porogamy.
  3. Plants are Monoecious in the family Cucurbitaceae.
  4. Cleistogamous flowers promote Cross pollination.
  5. In double fertilization, the male gamete fuses with the egg 4 the other male gamete fuses with the polar nuclei.
  6. The fuclosperm found in Dateseed is Horny type.

 

  • COMPLETE THE FOLLOWING: 5 x 1 = 5           
  1. ___________ helps in the dehiscence of the Anther.
  2. Crosspollination is also known as ___________.
  3. The basic unit used in Numerical Taxonomy is ____________.
  4. The Nucellus forms a beak like outgrowth at the micropye, known as ____________ in Polygonum.
  5. Glumes are found in the family _________.

 

  1. ANSWER THE FOLLOWING, EACH WITHIN 50 WORDS: 5 x 1 = 5         
  2. What is Tapetum?
  3. Define Anemophily.
  4. What are Synergids.
  5. Write down the systematic position of the family Solanaceae.
  6. Mention any 2 Timber yielding plants, with their Binomials.

 

 

 

 

PART – B

ANSWER ANY 5 OF THE FOLLOWING EACH WITHIN 350 WORDS:   5 x 8 = 40 Marks

 

  1. Write notes on essential oils, their source and preparation.
  2. What are the Contrivances for self pollination?
  3. Describe Apomixis.
  4. What is a Ruminate Endosperm?
  5. Explain Author citation.
  6. Give a brief account of Engler & Prantle’s system of classification.
  7. Mention any 2 plants, that give spices, write the systematic position, morphology of the useful part and their Economic values.
  8. Describe the development of Anther.

PART – C

ANSWER THE FOLLOWING EACH IN 1500 WORDS:                     2 x 20 = 40 Marks

 

  1. Write down the salient Features of the family Rubiaceae. Mention the Economic importance.

(or)

Explain the structure and development of Monocot Embryo.

  1. Write down the salient Features of the family Anacardiaceae. Mention the Economic importance of the family.

(or)

  1. Describe the development of Tetrasporic Embryosac. (10 Marks)
  2. Describe the development and structure of Cellular Endosperm. (10 Marks).

 

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Loyola College B.Sc. Plant Biology and Biotechnology Nov 2009 Taxonomy, Anatomy, Embryology &Economic Botany Of Angiosperms Question Paper PDF Download

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