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Metabolism MCQ Questions & Answers

Metabolism MCQs : This section focuses on the "Metabolism". These Multiple Choice Questions (MCQs) should be practiced to improve the Metabolism skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.




Question 1

A cell’s reservoir of NADPH represents its _______________

A. oxidation state
B. oxidation power
C. tensile strength
D. reducing power

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Question 2

In case of repeated contraction, muscle cells regenerate NAD⁺ by converting pyruvate to _____________

A. glycogen
B. lactate
C. starch
D. cellulose

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Question 3

In which of the following phenomenon the end product act as co-repressor and repress the synthesis of metabolic enzymes?

A. Allosteric regulation
B. Feedback repression
C. Feedback inhibition
D. Regulation by phosphorylation

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Question 4

Glycolysis begins with which of the following reactions?

A. reduction
B. oxidation
C. phosphorylation
D. acidification

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Question 5

Regulation of metabolic pathway is done by following ways except one, mark the one?

A. Substrate concentration
B. Allosteric regulation of enzymes
C. Availability of oxygen
D. Extracellular signals i.e. hormones or growth factors

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Question 6

Chemical compounds involved in the process of metabolism is known as ___________

A. Metabolites
B. Radicals
C. Catabolites
D. Intermediates

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Question 7

How many types of protein kinases are there?

A. 1
B. 2
C. 3
D. 4

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Question 8

Yeast cells convert pyruvate to lactate.

A. True
B. False

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Question 9

Name the type of the pathway which is involved in the synthesis of compounds?

A. Anabolic pathways
B. Catabolic pathways
C. Amphibolic pathway
D. Anapleurotic pathway

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Question 10

The catabolic pathway is exergonic in nature.

A. True
B. False

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Question 11

In fermentation, which of the following is regenerated?

A. Starch
B. Oxygen
C. NAD⁺
D. NADH

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Question 12

Which of the following is not an enzyme-catalyzed reaction in metabolism?

A. Isomerization and elimination
B. Internal rearrangement
C. Maillard reaction
D. Free radical reaction

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Question 13

The TCA cycle occurs in which region of a prokaryotic cell?

A. cytosol
B. mitochondria
C. ribsomes
D. golgi complex

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Question 14

Which of the following has a spiral metabolic pathway?

A. Glycolysis
B. Citric acid cycle
C. Glyoxylate cycle
D. Fatty acid biosynthesis

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Question 15

NAD⁺ can be derived from which vitamin?

A. A
B. C
C. Riboflavin
D. Niacin

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Question 16

Catabolic pathways result in _______________ of the molecules.

A. assembly
B. functionalization
C. conformation
D. disassembly

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Question 17

Which of the following cycle shows amphibolic pathway?

A. Glyoxylate
B. Citric acid cycle
C. Glycolysis
D. Lipid metabolism

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Question 18

How many mechanisms exist for altering the shape of an enzyme, playing a role in regulating glucose oxidation?

A. 1
B. 2
C. 3
D. 4

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Question 19

Energy released by catabolic pathways is stored in how many forms?

A. 1
B. 2
C. 3
D. 4

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Question 20

NAD is a _________

A. enzyme
B. cofactor
C. protein
D. nucleoside

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Question 21

Name the inhibition where end products of biosynthesis pathway inhibit the activity of the first enzyme?

A. Feedback inhibition
B. Feedback repression
C. Allosteric inhibition
D. Competitive inhibition

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Question 22

How many molecules of ATP are formed per molecule of oxidation of glucose?

A. 12
B. 24
C. 36
D. 48

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Question 23

Anabolic pathways are energy-requiring.

A. True
B. False

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Question 24

Protein kinases are responsible for transferring which group?

A. oxygen
B. carbon
C. amino
D. phosphate

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