“Loyola College B.Sc. Chemistry Nov 2013 General Microbiology Question Paper PDF Download”

The reserve food material in red algae is ________.
Bacteria which grow at very low temperatures are called _______.
Transfer of genetic material between cells by physical contact is called _______.
The host where the uredinal stage of Puccinia is seen is __________.
The organism used in the production of wine is _____________.

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

What are complex viruses?
Define organolithotrophs.
What are Okazaki fragments?
Give the composition of Bordeaux mixture.
What is pasteurization?

PART B

Answer the following, each answer not exceeding 350 words. Draw diagrams wherever necessary: (5 x 7= 35)

List out the salient features of microalgae.

(or)

Give an account of the characteristic features of fungi.
Explain briefly about the development of endospore.

(or)

Write notes on the methods used for quantification of microorganisms.
Discuss briefly about the process of conjugation.

(or)

Give an account of gene regulation in bacteria.
Write short notes on citrus canker and its control.

(or)

Explain briefly about Tobacco mosaic disease.
Give an account of Cheese production.

(or)

Write short notes on microbial enzymes.

PART C

Answer any three of the following, each answer not exceeding 1200 words. Draw diagrams wherever necessary: (3 x 15= 45)

Discuss in detail about the salient features of viruses and their classification.
Write detailed notes on the ultrastructure of a bacterial cell.
Give a detailed account of a) transformation and b) transduction.
Explain about the symptoms, pathogen, disease cycle and control of Black rust disease in wheat.
Explain in detail about the processes involved in the treatment of domestic wastewater.

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Loyola College B.Sc. Zoology Nov 2012 General Microbiology Question Paper PDF Download

October 31, 2017 by 01 prakash

LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – ADV. ZOOLOGY & CHEMISTRY

THIRD SEMESTER – NOVEMBER 2012

PB 3206 – GENERAL MICROBIOLOGY

Date : 09/11/2012 Dept. No. Max. : 100 Marks

Time : 9:00 – 12:00

Part – A

Answer the following, each within 50 words: (10 x 2 = 20)

Distinguish between Gram positive and Gram negative bacteria.
Write a short note on Biotecton.
What are pili?
What is DHA? Write a note on DHA.
What are the chemical components of bacterial cell wall?
Give the types of nutrient media for microbial culture.
What are fimbriae?
Define gene expression.
Mention the pathogens of Citrus canker and rust of Wheat.
What are vaccines?

Part – B

Answer the following, each within 500 words. Draw diagrams wherever necessary: (5 x 7 = 35)

11(a). Briefly describe the phenotypic classification system of bacteria.

(OR)

(b). Enumerate the physical properties of viruses.

12(a). Describe Carbon and Sulphur cycles.

(OR)

(b). Briefly explain the biological treatment of sewage water.

13(a). Give the structure and function of flagella in microbes.

(OR)

(b). What are pure cultures of microbes? Provide the methods of their maintenance.

14(a). Briefly describe conjugation in bacteria.

(OR)

(b). Give a short account on little leaf disease of brinjal.

15(a). Discuss the types of microbial food spoilage and the methods of food preservation.

(OR)

(b). Enumerate the microbial enzymes with their commercial applications.

Part – C

Answer any three of the following, each within 1200 words. Draw diagrams wherever necessary: (3 x 15 = 45)

Elaborately discuss the importance of microalgae in changing the science fields.

Explain the physical and chemical processes of sewage water treatment.

Describe microbial growth in batch culture. Add a note on the methods of its measurement.

Write the pathogen, symptoms and control measures of Tobacco Mosaic Viral disease.

Define transduction. Describe in detail specialized transduction.

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Loyola College B.Sc. Zoology April 2016 General Microbiology Question Paper PDF Download

October 31, 2017 by 01 prakash

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Loyola College B.Sc. Plant Biology and Biotechnology April 2007 General Microbiology Question Paper PDF Download

October 28, 2017 by 01 prakash

LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

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

IB 40

THIRD SEMESTER – APRIL 2007

PB 3200/4200 – GENERAL MICROBIOLOGY

Date & Time: 26/04/2007 / 9:00 – 12:00 Dept. No. Max. : 100 Marks

Part A

Choose the correct answer (5 x 1 = 5 )

Protozoans belong to
a) monera b) protista c) viruses d) animalia
EMB agar is a __________ medium.
a) differential b) selective c) enrichment d) general
______ is involved in the transfer of genetic material between different cells.
a) pili b) fimbria c) flagella d) mesosomes
Thiobacillus is involved in _______ cycle
a) nitrogen b) carbon c) sulfur d) phosphorus
The device that involves conversion of biochemical signal to electric signal is called
a) biosensor b) electrosensor c) thermistor d) bioconvertor

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

Viruses are free living entities.
Enrichment cultures are used routinely for all microbes.
DNA polymerase is involved in replication of DNA.
Bacterial diseases can be controlled by fungicides.
Proteases and lipases are used in the formulation of detergents.

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

Among fungi, sexual reproduction is absent in ______________.
The time taken by a bacterium to divide into two cells is called ________.
Lac operon concept explains the principle of __________.
Little leaf of brinjal is caused by _________________.
_______ is a widely used method for preservation of milk.

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

What are microalgae?
Define axenic cultures.
What are plasmids?
Give the composition of Bordeaux mixture.
What are vaccines?

Part B

Answer any five of the following each in about 350 words. Draw necessary diagrams.

(5 x 8 = 40)

Enumerate the general characteristics of viruses.
Explain the stages of microbial growth.
What is conjugation? Add a note on the movement of DNA during conjugation.
Describe the disease cycle in wheat rust.
Bring out the commercial applications of microbial enzymes.
Give an account of Nitrogen cycle.
Describe the process involved in Penicillin production.
Give the methods for food preservation from microbial spoilage.

Part C

Answer the following questions in about 1500 words. Draw necessary diagrams

(2 x 20 = 40)

Explain how bacteria are classified based on their shape and flagellation. Add a note on the

ultrastructure of bacterial cell

(or)

Write notes on : i) Transduction ii) Transformation.

a. Write notes on the pathogen, symptoms and control measures for
i) Citrus canker ii) Tobacco mosaic disease

(or)

Describe the process involved in primary and secondary treatment of waste water.

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Loyola College B.Sc. Chemistry Nov 2006 General Microbiology Question Paper PDF Download

October 24, 2017 by 01 prakash

LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – CHEMISTRY

AE 03

THIRD SEMESTER – NOV 2006

PB 3200 – GENERAL MICROBIOLOGY

(Also equivalent to PB 4200)

Date & Time : 31-10-2006/9.00-12.00 Dept. No. Max. : 100 Marks

PART A

Answer all the questions (20 Marks)

Choose the best answer (5 x 1 = 5)

1.Which one of the following is true for viruses?

(a) made up of proteins only.

(b) multiply only in host cells.

(d) complex, cellular and microscopic entities.

E.coli has _________________ DNA.

(a) circular double stranded (b) linear double stranded

Little leaf of brinjal is a _________ disease.

(a) spiroplasmal (b) viral

Microbes produce __________________ enzymes.

(a) extra-cellular (b) intra-cellular

The cell wall of fungi is made up of

(a) chitin (b) pectin (c) polysaccharide (d) protein.

State true or false (5 x 1 = 5)
Influenza virus is an example of enveloped helical virus.
The reserve food material in fungi is glycogen.
Transformation was discovered by Lederberg.
The causal organism of citrus canker is Xanthomonas citri.

10.Gamma radiations can be used for food preservation.

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

11.The spores with flagella are called _______________________

12.Culture preservation by freeze- drying is called ____________________

13._________________ fragments are synthesized during discontinuous replication.

14.The primary host for Puccinia graminis is ___________________

15.The antibiotic discovered by Sir Alexander Flemming was ______________

Answer the following questions each in about 50 words (5 x 1 = 5)
Define selective media.
What is spermatization?
Define Operon.
Give the composition of Bordeaux mixture.
What is pasteurization?

PART B

Answer any five of the following each in about 350 words only. Draw necessary

diagrams (5 x 1 = 5)

Enumerate the general characteristics of Viruses.
Briefly discuss about the microbial enzymes and their commercial applications.
Identify and comment on the various phases of microbial growth curve.
How bacteria are classified based on the nutritional requirements?

25.With the help of labelled diagrams, explain the different types of asexual reproduction

in fungi.

26.Explain in detail about bacterial conjugation.

27.Write about the pathogen , symptoms and control measures of Tobacco mosaic

disease.

28.Explain nitrogen cycle in detail mentioning the role of microorganisms.

PART C

Answer the following questions each in about 1500 words. Draw necessary

diagrams. (2 x 20 = 40)

29.(a) Describe in brief the range of thallus structure, vegetative, asexual and sexual

reproduction of microalgae.

(OR)

(b) Write an essay on the internal and external feautures of a bacterial cell.

(a) Explain the following:

(i)Transduction.

(ii) Transformation.

(OR)

(b) Explain the processes involved in wastewater treatment.

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Loyola College B.Sc. Chemistry April 2007 General Microbiology Question Paper PDF Download

October 24, 2017 by 01 prakash

LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – CHEMISTRY& ADVAN.ZOOLOGY

IB 40

FOURTH & THIRD SEMESTER – APRIL 2007

PB 4200 / 3200 – GENERAL MICROBIOLOGY

Date & Time: 26/04/2007 / 9:00 – 12:00 Dept. No. Max. : 100 Marks

PART A

Choose the correct answer (5 x 1 = 5 )

Protozoans belong to
a) monera b) protista c) viruses d) animalia
EMB agar is a __________ medium.
a) differential b) selective c) enrichment d) general
______ is involved in the transfer of genetic material between different cells.
a) pili b) fimbria c) flagella d) mesosomes
Thiobacillus is involved in _______ cycle
a) nitrogen b) carbon c) sulfur d) phosphorus
The device that involves conversion of biochemical signal to electric signal is called
a) biosensor b) electrosensor c) thermistor d) bioconvertor

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

Viruses are free living entities.
Enrichment cultures are used routinely for all microbes.
DNA polymerase is involved in replication of DNA.
Bacterial diseases can be controlled by fungicides.
Proteases and lipases are used in the formulation of detergents.

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

Among fungi, sexual reproduction is absent in ______________.
The time taken by a bacterium to divide into two cells is called ________.
Lac operon concept explains the principle of __________.
Little leaf of brinjal is caused by _________________.
_______ is a widely used method for preservation of milk.

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

What are microalgae?
Define axenic cultures.
What are plasmids?
Give the composition of Bordeaux mixture.
What are vaccines?

PART B

Answer any five of the following each in about 350 words. Draw necessary diagrams.

(5 x 8 = 40)

Enumerate the general characteristics of viruses.
Explain the stages of microbial growth.
What is conjugation? Add a note on the movement of DNA during conjugation.
Describe the disease cycle in wheat rust.
Bring out the commercial applications of microbial enzymes.
Give an account of Nitrogen cycle.
Describe the process involved in Penicillin production.
Give the methods for food preservation from microbial spoilage.

PART C

Answer the following questions in about 1500 words. Draw necessary diagrams

(2 x 20 = 40)

a. Explain how bacteria are classified based on their shape and flagellation. Add a note on the ultrastructure of bacterial cell

(or)

Write notes on : i) Transduction ii) Transformation.

a. Write notes on the pathogen, symptoms and control measures for
i) Citrus canker ii) Tobacco mosaic disease

(or)

Describe the process involved in primary and secondary treatment of waste water.

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“Loyola College B.Sc. Chemistry Nov 2008 General Microbiology Question Paper PDF Download”

October 24, 2017 by 01 prakash

LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

ED 03

B.Sc. DEGREE EXAMINATION – CHEMISTRY & ZOOLOGY

THIRD SEMESTER – November 2008

PB 3200 – GENERAL MICROBIOLOGY

Date : 13-11-08 Dept. No. Max. : 100 Marks

Time : 9:00 – 12:00

PART A

Answer all questions (20 Marks)

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

Which of the following is seen in all algae?
Chlorophyll a b. Chlorophyll c c.Chlorophyll b d. fucoxanthin
Cryopreservation involves storage
at low temperature b. at optimum temperature
for long periods d. at very low temperature using liquid nitrogen
Lac operon in E.coli is an example of ________operon.
inducible b. positively regulated
repressible d. negative inducible
Okazaki fragments are used to elongate
the leading strand towards the replication fork
the lagging strand towards the replication fork
the leading strand away from the replication fork
the lagging strand away from the replication fork
Which bacterium is dominant in Trickling filters?
Pseudomonas b. Aeromonas
c. E. coli Zoogloea

II State whether the following statements are true or False (5×1= 5 Marks)

The conidiospores are sexual spores.
The generation time of a bacterial population is the time it takes for a bacterial population to double.
Competence is related towards transformation.
Xanthomonas citri is a rod shaped, monotrichous and anaerobic bacterium.
Water can be purified by exposure to UV.

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

The cell wall of diatoms are made of ___________.
The bacteria which grow in the presence of minimum quantities of free oxygen are

known as __________.

During replication of DNA, the enzyme known as __________ attaches nucleotides

together to form the new DNA strand.

__________ is a heteroecious fungus with macrocyclic life cycle.
Desulfovibrio is involved in ______________.
Answer all, each in about 50 words (5x 1 = 5 Marks)
Write short notes on enveloped viruses.
Distinguish between flagella and fimbriae.
Define transcription.
What is dikaryotisation?
What are vaccines?

PART B

Answer any five, each within 350 words only. Draw diagrams and flowcharts wherever necessary. (5x 8= 40 Marks)

List out the salient features of algae.
What is a microbial colony? How can the numbers of bacteria be measured in a bacterial

population?

Explain the different methods of reproduction in bacteria.
Describe the structure and functioning of lac operon in E.coli.
Briefly write about Little leaf of brinjal.
Give a brief account of the Tobacco Mosaic disease.
Write short notes on microbial enzymes.
Discuss briefly about sulfur cycle.

PART C

Answer the following, each within 1500 words only. Draw diagrams and flowcharts wherever necessary. (2×20= 40 Marks)

29 a. Write detailed notes on the characteristic features and classification of viruses.

Explain the following:
i) Cheese production ii) Beer production

30 a. Describe the ultrastructure of a bacterial cell.

Explain the following:
i) Bacterial conjugation ii) Transduction

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Loyola College B.Sc. Adv. Zoology & Bio-Technology April 2009 General Microbiology Question Paper PDF Download

October 23, 2017 by 01 prakash

LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – CHEMISTRY & ADVAN. ZOOL.& BIO-TECHN.

VE 05

THIRD SEMESTER – April 2009

PB 3200 – GENERAL MICROBIOLOGY

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

PART A

Answer all questions (20 Marks)

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

Which of the following is not true for fungi

a.heterotrophic b. saprophytic c. parasitic d. autotrophic

Barophilic microorganisms are those which grow at
a. cold temperature high pressure
high temperature d. high pH values
Transcription and translation are related to
DNA replication b. glycolysis
protein synthesis d. the electron transport chain
Which of the following is not true for Mycoplasma?
pleomorphic b. membrane contains sterol
penicillin resistant d. non- self reproducing
Name the enzyme which is a substitute for calf renin
alkaline protease b. acid protease
neutral protease d. lipase

II State whether the following statements are true or false (5×1= 5 Marks)

The phycobiliproteins are characteristic of green algae.
Bacterial flagella are composed of a carbohydrate known as peptidoglycan.
The bases adenine, guanine and cytosine are found in both RNA and DNA, but RNA

has thymine also.

TMV is sap transmissible and enters the host through wounds.
Malted barley is used in beer production.

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

The reserve food material in fungi is ____________.
__________ microorganisms are those capable of living in different

environments.

The operon has been studied in depth in the common bacterium_________.
_____________ is grown in highly specified culture medium containing sterol.
The source for streptomycin is __________.

Answer all, each in about 50 words (5x 1 = 5 Marks)
What are capsomeres?
Write short notes on inclusion bodies.
What is transformation?
Suggest any two measures to control tobacco mosaic disease.
Define sulphate reduction.

PART B

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

necessary. (5x 8= 40 Marks)

Discuss briefly about the general features of viruses.
Describe the classification of bacteria based on shapes and flagellation.
Explain the stages of microbial growth curve.
Describe the process of bacterial conjugation.
Give a brief account of citrus canker.
Write about the pathogen, symptoms and control measures of wheat rust disease.
Give an account of trickling filters.
Write notes on penicillin production.

PART C

Answer the following, each within 1500 words only. Draw diagrams and flowcharts wherever necessary. (2×20= 40 Marks)

Explain in detail about the following :

salient features of algae ii) salient features of fungi

Write notes on
i) Nitrogen cycle ii) Microbial enzymes

30 a. Explain the various pure culture techniques and add a note on maintenance of pure cultures.

Write an essay on DNA replication in E. coli.

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