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CSIR NET Life Sciences Question Paper: June 2015: with Answer Key and Explanations: Part I

NET life Sciences June 2015 Question Paper

Structure of Eukaryotic Cilia (Image Source Wikipedia)

CSIR/JRF/NET: Life Sciences, June 2015 (I)

(Original Question Paper)
PART: B (Questions 21 – 40)

(21).  A 1% (w/v) solution of a sugar polymer is digested by an enzyme (20ug, MW = 200,000). The rate of monomer sugar (MW = 400) liberated was determined to have a maximal initial velocity of 100 mg formed/ min. The turnover number (min -1) will be:

a.       5 X 10 4
b.      2.5 X 10 -2
c.       4.0 X 10 -6
d.      2.5 X 10 5

(22).  In an alpha helical polypeptide, the backbone hydrogen bonds are between

a.       NH of n and CO of n + 4 amino acids
b.      CO of n and NH of n + 3 amino acids
c.       CO of n and NH of n + 4 amino acids
d.      NH of n and CO of n + 3 amino acids

(23).  The following are three single stranded DNA sequences that form secondary structures.


Based on their stability, which one is correct?

a.       (a) = (b) = C
b.      (c) > (a) > (b)
c.       (b) > (c) = (a)
d.      (b) > (c) > (a)

(24).  Which of the following is not a part of pyruvate dehydrogenase enzyme complex in glycolysis pathway?

a.       Pyruvate dehydrogenase
b.      Dihydrolipoyl transferase
c.       Dihydrolipoyl dehydrogenase
d.      Dihydrolipoyl oxidase

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