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Exam Details

LIFE SCIENCE PART C (DECEMBER 2017) 2017

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Questions 75
Duration 180 mins
Package CSIR NET & SET - Previous Year Papers

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Difficulty distribution

Medium 39 52%
Hard 35 46.7%
Easy 1 1.3%

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Multiple Choices 75 100%

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1
2017 · Unclassified
LIFE SCIENCE PART C (DECEMBER 2017) 2017
Match the coenzymes in column I serving as transient carriers of specific atoms or functional groups in column IISelect correct combinations from the options given below:
A
A-(iv), B-(iii), C-(ii), D-(i)
B
A-(i), B-(ii), C-(iii), D-(iv)
C
A-(ii), B-(i), C-(iv), D-(iii)
D
A-(iii), B-(iv), C-(i), D-(ii)
2
2017 · Unclassified
LIFE SCIENCE PART C (DECEMBER 2017) 2017
Out of the statements mentioned below(A) L-threonine and L-allo-threonine interact identically with plane-polarized light.(B) van der Waals' interactions are always attractive.(C) Poly (pro) II-helix is not stabilized by intermolecular hydrogen bonds.(D) The folding of a protein is associated with an overall positive change in free energy and a negative change in entropy.(E) Lysine acetylation on histone is associated with loosening of the histone complex from DNAWhich of the following combinations is CORRECT?
A
A and C
B
B and D
C
C and E
D
D and E
3
2017 · Unclassified
LIFE SCIENCE PART C (DECEMBER 2017) 2017
The following statements are made:
(A) and anomers of glucose are inter convertible and the ratio of their abundance is 1:2, respectively.
(B) Single chain lipids form micelles and double chain lipids form bilayers in water.
(C) Proline is energetically favoured at the C-termini of an -helix than at the N-termini.
(D) Major groove of DNA readily accommodates several common structural motifs in protein than the minor groove.
(E) Replacement of a canonical Watson-Crick pairing by Wobble base pairs does not change the surface properties in t-RNA
Which one of the following combinations is INCORRECT?
A
A and D
B
B and E
C
C and E
D
B and C
4
2017 · Unclassified
LIFE SCIENCE PART C (DECEMBER 2017) 2017
From the following statements
(A) Enzymes enhance reaction rates by a factor of 2 to 10.
(B) The activation energy for a reaction is lowered by enzymes.
(C) The interactions between enzymes and substrates are hydrogen bonding, hydrophobic and ionic.
(D) Substrate concentration does not affect the rate of enzyme-catalyzed reactions.
Pick the combination with all INCORRECT statements.
A
A, B
B
B, C
C
A, C
D
A, D
5
2017 · Unclassified
LIFE SCIENCE PART C (DECEMBER 2017) 2017
Match the chemical agents that interfere in oxidative phosphorylation process with their respective mode of action.Choose the correct combination from below:
A
A-(ii), B-(iv), C-(v), D-(iii)
B
A-(iv), B-(i), C-(ii), D-(iii)
C
A-(v), B-(ii), C-(i), D-(ii)
D
A-(i), B-(iii), C-(ii), D-(v)
6
2017 · Unclassified
LIFE SCIENCE PART C (DECEMBER 2017) 2017
A polymer is synthesized from an achiral amino acid. The conformation of the polymer can be investigated by the following techniques.
(A) Fibre diffraction
(B) Nuclear magnetic resonance spectroscopy
(C) Circular dichroism spectroscopy
(D) Differential scanning calorimetry
Choose the combination which would indicate that the polymer adopts a helical conformation
A
A, C
B
B, D
C
A, B
D
C, D