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HALL TICKET NUMBER

M.Sc. Entrance Examination JUNE 2017 Booklet Code: A

Time: 2hrs Code No-N-ll (M.Sc. Biochemistry) Max Marks: 100

Please read the following instructions carefully before answering:

1. Enter Hall Ticket number in the space provided above and also on OMR sheet.

2. Paper contains three sections: Part A, Part B and Part C together with 85 questions for 100

marks. Part A contains 25 questions, each question carries one mark. Part B contains 45

questions, each question carries one mark. Part C contains 15 questions, each question

carries two marks.

3. Part A will be used for tie breaking.

4. In Part A there is negative marking. 0.33 marks will be deducted for each wrong answer.

In Part B there is no negative marking. In Part C there is negative marking. 0.66 marks

will be deducted for each wrong answer.

5. Answers have to be marked on the OMR sheet as per the instructions provided.

6. Apart from OMR sheet, the question paper contains 16 (sixteen) pages including the

instructions and rough work sheets.

7. Please return the OMR answer sheet at the end of examination.

8. No additional sheet will be provided.

9. Rough work can be carried out in the question paper itself in the space provided at the end of

the booklet.

10. Non programmable calculators are allowed.

PART A

[Each question has only one right answer. Mark the right answer]

1. The development of embryos from the cells of nucellus is known as

A) Apospory

B) Apomixis

C) Apogamy

D) Parthonogenesis

2. During photorespiration, the reactive oxygen species, H202 is produced in

A) Glyoxysome

B) Lysosome

C) Dictyosome

D) Peroxisome

3. The scientist who received Nobel Peace Prize in 1970 in recognition of his contribution to

World Peace through increasing food supply is

A) H. G. Khorana

B) N. Bourlag

C) M. S. Swaminathan

D) C. Subramaniam

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4. Which of the following statements about 'Kinetin' is INCORRECT?

A) Tryptophan is a precursor for de novo biosynthesis of kinetin

B) Adenine-type cytokinins such as kinetin are synthesized in roots or actively dividing cells

C) Kinetin was discovered as a breakdown product of DNA

D) Kinetin enhances leaf senescence

5. Cinnamomum camphora, a source of camphor that is a component of incense and used as

medicine, belongs to the family

A) Lamiaceae

B) Lauraceae

C) Malvaceae

D) Apocynaceae

6. What atoms are linked (N-~-glycosidic linkage) in the adenine base with the sugar?

A) N -9 atom of adenine ring is covalently attached with C-1 of sugar

B) N -1 atom of adenine ring is covalently attached with C-1 of sugar

C) C-5 in the adenine ring is covalently attached to with C-1 of sugar

D) N-5 of adenine ring is covalently attached to with C-1 of sugar

7. What activities are associated with RNA enzymes?

A) Nuclease activity

B) Polymerase activity

C) Nuclease and polymerase activity

D) Topoisomerase activity

8. How do drugs known as statins lower blood cholesterol concentrations?

A) Inhibit HMG CoA reductase

B) Inhibit acetyl CoA carboxylase

C) Inhibit fatty acid synthase

D) Inhibit cycloxygenase

9. The action potential in a nerve cell results from the movement of

A) Na + ions from extracellular to intracellular fluid

B) Na + ions from intracellular to extracellular fluid

C) K+ ions from extracellular to intracellular fluid

D) K+ ions from intracellular to extracellular fluid

10. The formation of a peptide bond between two amino acids is an example of a

A) cleavage reaction

B) condensation reaction

C) isomerisation reaction

D) oxidation reduction reaction

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