GATE XL 2017 Paper 1 — page 11

Questions 31–33 of 125. Imported answers require review unless explicitly marked reviewed.

Match the following enzymes in column I with their factors in column II

Column I (P) Pyruvate decarboxylase (Q) Glyceraldehyde 3-phosphate dehydrogenase (R) Pyruvate carboxylase (S) Glucose-6-phosphate dehydrogenase

Column II i. Biocytin ii. NADP⁺ iii. NAD⁺ iv. Thiamine pyrophosphate

Your answerChoose one option.

P-ii; Q-i; R-iv; S-iii

P-iv; Q-iii; R-i; S-ii

P-i; Q-ii; R-iii; S-iv

P-iii; Q-i; R-iv; S-ii

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Match the molecule in column I with its function in column II

Column I (P) Cholera toxin (Q) Pertussis toxin (R) IP3 (S) Caffeine

Column II (i) modifies Gαi (ii) inhibits c-AMP phosphodiesterase (iii) modifies Gαs (iv) increases intracellular Ca²⁺ level

Your answerChoose one option.

P-iii; Q-i; R-iv; S-ii

P-iv; Q-i; R-iii; S-ii

P-ii; Q-iv; R-i; S-iii

P-ii; Q-i; R-ii; S-iv

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In an in vitro dehydrogenation reaction of succinate catalyzed by succinate dehydrogenase, malonate is added. Which one of the following curves represents the effect of malonate on the catalysis of succinate dehydrogenase?

Your answerChoose one option.

Diagram for Life Sciences question 33 (figure 2)

Diagram for Life Sciences question 33 (figure 3)

Diagram for Life Sciences question 33 (figure 4)

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2017 · Paper 1

Question 31

Question 32

Question 33