Enzymes - Mock Test 49

Question 481

Allosteric activator of glycogen synthase is?

A) Glucose B) Glucose-6-Phosphate C) UTP D) Glucose-1-phosphate

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Question 482

The enzyme glucose-6-phosphatase which catalyses the conversion of glucose 6-phosphate to glucose is not found in?

A) Liver B) Muscle C) Intestine D) Kidney

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Question 483

In the synthesis of glycogen from glucose the reversible step is?

A) Glucose → glucose 6-phosphate B) Glucose 6-phosphate → glucose 1-phosphate C) Glucose 1-phosphate → UDP glucose D) UDP glucose → glycogen

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Question 484

In glycogenolysis, the enzyme which transfers a trisaccharide unit from one branch to the other exposing 1→ 6 branch point is?

A) Phosphorylase B) α-[1→ 4]→ α-[1→ 4]→ Glucan transferase C) Amylo [1→ 6] glucosidase D) Amylo[1→ 4]→ [1→ 6] transglucosidase

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Question 485

In glycogenesis a branch point in the molecule is established by the enzyme?

A) Amylo[1→ 4][1→ 6] transglucosidase B) α [1→ 4] α [1→ 4] Glucan transferase C) Amylo [1→ 6] glucosidase D) Glycogen synthase

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Question 486

The glycogen content of the liver is upto?

A) 6% B) 8% C) 10% D) 12%

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Question 487

The pathway of glycogen biosynthesis involves a special nucleotide of glucose. In the reaction below, NuDP stands for NuDP Glucose + glycogenn → NuDP + glycogenn+1?

A) ADP B) GDP C) UDP D) CDP

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Question 488

The ratio that most closely approximates the number of net molecules of ATP formed per mole of glucose utilized under aerobic conditions to the net number formed under anaerobic conditions is?

A) 4:1 B) 13:1 C) 18:1 D) 24:1

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Question 489

In the erythrocytes, the net production of ATP molecules by the Rapport-Leubering pathway is?

A) 0 B) 2 C) 4 D) 8

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Question 490

The rate of citric acid cycle is controlled by the allosteric enzyme?

A) Aconitase B) Fumarase C) Fumarase D) Malate dehydrogenase

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