Enzymes - Mock Test 52

Question 511

Dietary deficiency of thiamin inhibits the activity of the enzyme?

A) Pyruvate kinase B) Pyruvate dehydrogenase C) Phosphofructokinase D) Enolase

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Question 512

Pyruvate dehydrogenase a multienzyme complex is required for the production of?

A) Acetyl-CoA B) Lactate C) Phosphoenolpyruvate D) Enolpyruvate

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Question 513

The net number of ATP formed per mole of glucose in anaerobic glycolysis is?

A) 1 B) 2 C) 6 D) 8

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Question 514

Hexokinase is inhibited in an allosteric manner by?

A) Glucose-6-Phosphate B) Glucose-1-Phosphate C) Fructose-6-phosphate D) Fructose-1, 6-biphosphate

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Question 515

One of the enzymes regulating glycolysis is?

A) Phosphofructokinase B) Glyceraldehyde-3-phosphate dehydrogenase C) Phosphotriose isomerase D) Phosphohexose isomerase

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Question 516

Phosphofructokinase key enzyme in glycolysis is inhibited by?

A) Citrate and ATP B) AMP C) ADP D) TMP

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Question 517

Lineweaver – Burk double reciprocal plot is related to?

A) Substrate concentration B) Enzyme activity C) Temperature D) Both A and B

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Question 518

Enzymes leading to the high energy phosphorylation of substrates during glycolysis include which of the following?

A) Phosphoglycerate kinase B) Enolase C) Pyruvate Kinase D) Glyceraldehyde-3-phosphate dehydrogenase

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Question 519

Erythrocytes under normal conditions and microorganisms under anaerobic conditions may accumulate?

A) NADPH B) Pyruvate C) Phosphoenolpyruvate D) Lactate

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Question 520

In erythrocytes, 2, 3-biphosphoglycerate is derived from the intermediate?

A) Glyeraldehyde-3-phosphate B) 1, 3-Biphosphoglycerate C) 3-Phosphoglycerate D) 2-Phosphoglycerate

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