Assam University 2009 B.Sc Zoology TDC Part-II Honours --- Fourth - Question Paper

NTS-09/ ZOOH-4 /026

2009
ZOOLOGY (Honours)
Fourth Paper
(Cell Biology, Genetics, Biochemistry and Histology))
TDC Part-II

Full Marks : 70
Pass Marks : 21

Time : three hours

The figure in the margin shows full marks for the ques.

ans all ques.

1. discuss with diagrams the structure and function of endoplasmic reticulum.
4+6 = 10
Or
Write notes on any 2 of the subsequent : five x two =10

(a) Cell cycle (b) Chromatin (c) Lampbrush chromosomes

2. define the structure and role of various kinds of RNA. 8

Or
define the mechanism of protein synthesis in 70S ribosome. 8

3. define the chromosome theory of inheritance. 10

Or
discuss with suitable illustrations the complementary and supplementary effects of genes. 10

4. What is linkage? define the mechanism of linkage in animals. 2+12 = 14

Or
Write notes on the subsequent : seven + seven = 14

(a) Gene mutation (b) Colour blindness and Klinefelter syndrome

5. What is vitamin? Classify vitamins with suitable examples. Mention the functions of the fat soluble vitamins. 2+4+8 = 14
Or
What is meant by activation energy? discuss the theories of mechanism of enzyme action. explain different factors inhibiting enzyme action. 2+6+6 = 14

6. define with diagrams the histology of mammalian lung and ovary. 7+7 = 14

Or
define with diagrams the ultrastructure of neuron and muscle fibre. seven + seven =14

Earning:   Approval pending.