The previous year Entrance Exam M. Sc. in Molecular Biology and Biotechnology Question Paper of Tezpur University is as follows:

Full Mark : 100 Each question carries marks Time : 2 hours

Part A (80marks)

Instruction : Out of the four options, only one is correct and choose the correct answer. Two (2) marks will be awarded for each correct and one (1) mark deducted for each wrong answer.
1. A car weighing 500 kg, working against a resistance of 500 Newton accelerates from the rest to 100 meters at a
speed of 20 m/sec. The kinetic energy of the car is –
a) 5 X 104 Joule b) 10 X 104 joule c) 15 X 104 joule d ) 20 X 104 joule
2. The distance between two base pairs of DNA is
a) 3.4 A0 b) 34 A0 c)340 A0 d) None of these
3. The dimensional formula for latent heat is –
a) M0L2T-2 b) M1L2T-2 c) M0L0T-2 d) M0L2T-1
4. Which of the following metals react with H2O at room temperature?
a) Ag b) Fe c) Al d) Na
5. Celebral malaria is caused by –
a) Plasmodium vivax b) P.ovale c) P. falciparum d) P. malariae
6. Antibodies are secreted by
a) T cells b) B cells c) Plasma cells d) None of the above
7. Prions are infectious particles that are comprised entirely of
a) DNA b) RNA c) Proteins d) Carbohydrates
8. Given that bacterium has generation time of 0.5 h, starting with an initial inoculum of 2 x 105 the count after 3 h
of culture will be
a) 3.2 x 106 b) 6.4 x 106 c) 12.8 x 106 d) 12.8 x 107
9. Multidrug resistance of an organism may be related to
a) ability of the organism to efflux the drug b) ability to chemically inactivate the drug
c)none of the above d) both the above
10. Hospital acquired infections are also called
a) Emerging infections b) nosocomial infections c) Novel infections d)None of the above
11. Vaccination programs like the polio vaccination drive are aimed at providing
a) treatment of the disease b) prophylactic measure against the disease c) None of the above
12. In photosynthesis, ATP is synthesized in the
a) Mitichondrial matrix
b) The stroma of chloroplast
c) Between the inner and the outer membranes of the chloroplast
d) In the thylakoid lumen of chloroplast
13. Apoptosis term is related to
a) Abnormal cell growth b) Cell death c) Cell morphogenesis d) Cell differentiation
14. which of the following is not true :
a) Lipids are made up of fatty acids and glycerol.
b) Lipids are less soluble in water.
c) All membranes in living cells contain lipids.
d) Unsaturated fatty acids have higher melting point than saturated fatty acids.
15. Which of the following is not true :
a) Messelson and Stahl proved semiconservative mode of DNA replication.
b) Hersey and Chase proved DNA is the genetic material.
c) Jacob and Monod proved gene regulation in eukaryotes.
d) t-RNA was initially hypothesized as adaptor molecule by F.H.C. Crick.
16. Adenosine is a :
a) Purine base b) Pyrimidine base c) Nucleotide d) Nucleoside
17. A mechanism of genetic recombination in bacteria that does not occur in a culture medium containing DNase
a) Conjugation b) Sexducation c) Transducation d) Transformation
18. Which of the following is not greenhouse gas
a) CO b) NH3 c) O3 d) CH4

PART B (20 marks)

1. Calculate the molality (m) of a solution of 72.0 g glucose ( C6H12O6) in 1 litre of water.
2. Write the structure of the following :
a) D-glucose b) Cholesterol c) Isopropyl chloride
3. Describe briefly epinastic banding
4. What is royal jelly, where and why it is produced ?
5. Illustrate the structure of a DNA molecule.
6. Fill up the blank space – 1 x 2
a) The deficiency of the hormone insulin causes ………………………..
b) The RNAs within the nucleolus performing various functions are known
as …………………………………….
7. Give two advantage of Mother’s milk in conferring immune protection to the infant.
8. While magnification and resolution are key issues in microscopy, briefly explain the significance of each in 2-3
sentences.