JUNE 2021
B. Sc. (VI Semester) Examination
ZOOLOGY
Paper: ZOO/T6/361
(Endocrinology and Immunology)
Full Marks : 80
Pass Marks : 35%
Time : Three Hours
Notes: (i) Answer all questions.
(ii) The figures in the margin indicate full marks for the questions
1. Answer all questions: 2x5= 10
(a) Define autocrine signaling.
(b) Define MHC.
(c) Name the precursor of testosterone and estradiol biosynthesis.
(d) What is the function of Mast Cells?
(e) Define humoral immunity.
2. Write short notes on any four of the following: 5x4= 20
(a) Hypothalamo hypophyseal portal system.
(b) Adrenal cortex
(c) Structure of Testes
(d) Thymus
(e) Cell-mediated immune response.
3. Answer any five of the following: 10x5= 50
(a) Describe the structure and function of the hypothalamus.
(b) Describe the mechanism of action of steroid hormones.
(c) Describe the structure and function of ovary in mammals.
(d) What are immunoglobulin’s? Describe the structure and functions of different types of immunoglobulin.
(e) Describe how monoclonal antibody is produced with suitable diagrams.
(f) Explain the concept of chemical contraception.
(g) Describe the structure and function of anterior pituitary.
