LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
M.Sc. DEGREE EXAMINATION – ZOOLOGY
THIRD SEMESTER – APRIL 2011
ZO 3810/3807 – INTEGRATED PHYSIOLOGY
Date : 12-04-2011 Dept. No. Max. : 100 Marks
Time : 9:00 – 12:00
PART – A ( 10 x2=20)
ANSWER ALL IN A FEW SENTENCES
- Distinguish psychophiles and halophiles.
- Differentiate hiberation and diapauses.
- Define cyclomorphosis.
- State diffusion coefficient.
- What do you know about Juxtra glomerular complex ?
- Comment an Warburg’s yellow enzyme.
- What are chaperones and chromataphores?
- State the importance of lipofusin.
- Comment an Calmodulation.
- Expand: a) CCK b) BMR
PART – B ( 4 x 10 = 40)
BRIEFLY ANSWER ANY FOUR
- Compare the osmoregulatory mechanisms of aquatic and terrestrial animals.
- Explain the mechanisms of G- protein signaling.
- Elucidate positive and negative feedback mechanisms using hormones.
- Illustrate Wald’s visual cycle with a note on its significance.
- How is stomach acid secretion regulated in our digestive system ?
16 . Outline the role of buffer system in the physiological co-ordination.
. PART – C ( 2 x20=40)
ANSWER ANY TWO IN DETAIL
- Discuss the physiology of muscular contraction including cardiac muscular contraction.
- Examine the concept of chronobiology towards its implication.
- Decipher the mechanisms of thermoregulation in the light of endocrine
System.
- Compare the physiology of electric organs and organs involved in bioluminescence.
