Principles of Bioenergetics and Glycolysis MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Principles of Bioenergetics and Glycolysis, a fundamental topic in the field of Biochemistry. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Principles of Bioenergetics and Glycolysis MCQs are designed to help you grasp the core concepts and excel in solving problems.

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Principles of Bioenergetics and Glycolysis MCQs | Page 17 of 23

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Q161.
Ethanol is oxidized to acetaldehyde in the liver cytoplasm by

a.

Alcohol dehydrogenase

b.

Alcohol carboxylase

c.

Pyruvate carboxylase

d.

Pyruvate kinase

Discuss
Answer: (a).Alcohol dehydrogenase
Q162.
The main source of glucose carbons for gluconeogenesis is

a.

Guanine

b.

Alanine

c.

Cysteine

d.

Threonine

Discuss
Answer: (b).Alanine
Q163.
Which of the following statements about gluconeogenesis is correct?

a.

Pyruvate is first converted to phosphoenolpyruvate by phosphoenolpyruvate carboxykinase

b.

Fructose 1, 6-biphosphatase converts fructose 1, 6-bisphosphate into fructose 1-phosphate

c.

Glucose 6-phosphatase hydrolyzes glucose 6-phosphate to release glucose into the blood

d.

Glucose 6-phosphatase hydrolyzes glucose 6-phosphate and is found in liver and muscle

Discuss
Answer: (c).Glucose 6-phosphatase hydrolyzes glucose 6-phosphate to release glucose into the blood
Q164.
In the pentose phosphate pathway, the major products are

a.

Ribulose and NADPH

b.

Ribulose and NADH

c.

Ribulose and NAD⁺

d.

Ribulose and ATP

Discuss
Answer: (a).Ribulose and NADPH
Q165.
The first reaction of the pentose phosphate pathway is

a.

Oxidation of glucose 6-phosphate to 6-phosphoglucono-Ξ΄-lactone

b.

Oxidation of 6-phosphogluconate to ketopentose ribulose 5-phosphate

c.

Reduction of 6-phosphoglucono-Ξ΄-lactone to glucose 6-phosphate

d.

Reduction of ketopentose ribulose 5-phosphate to 6-phosphogluconate

Discuss
Answer: (a).Oxidation of glucose 6-phosphate to 6-phosphoglucono-Ξ΄-lactone
Q166.
Which of the following statements is correct about oxidative pentose phosphate pathway?

a.

It generates NADH

b.

It oxidizes NADPH to NADP⁺

c.

The pathway supplies ribose 5-phosphate and NADPH in the quantities the cell requires

d.

Glucose 6-phosphatase catalyzes the rate limiting reaction of the pathway

Discuss
Answer: (c).The pathway supplies ribose 5-phosphate and NADPH in the quantities the cell requires
Q167.
Which one out of the following enzymes acts in pentose phosphate pathway?

a.

Aldolase

b.

Glycogen phosphorylase

c.

Pyruvate kinase

d.

6-phosphogluconate dehydrogenase

Discuss
Answer: (d).6-phosphogluconate dehydrogenase
Q168.
Oxidation of 3 molecules of glucose by pentose phosphate pathway results in the production of

a.

3 molecules of pentose, 6 molecules of NADPH and 3 molecules of COβ‚‚

b.

4 molecules of pentose, 6 molecules of NADPH and 3 molecules of COβ‚‚

c.

4 molecules of pentose, 3 molecules of NADPH and 3 molecules of COβ‚‚

d.

3 molecules of pentose, 4 molecules of NADPH and 3 molecules of COβ‚‚

Discuss
Answer: (a).3 molecules of pentose, 6 molecules of NADPH and 3 molecules of COβ‚‚
Q169.
The main function of pentose phosphate pathway is

a.

Supply NADP⁺

b.

Supply NADH

c.

Supply energy

d.

Supply pentoses and NADPH

Discuss
Answer: (d).Supply pentoses and NADPH
Q170.
One of the following statements is correct about pentose phosphate pathway

a.

It generates 6 moles of COβ‚‚ for each mole of glucose consumed

b.

It generates 38 mol of ATP per mole of glucose consumed

c.

It is a reductive pathway that consumes NADH

d.

Present in plants but not in animals

Discuss
Answer: (a).It generates 6 moles of COβ‚‚ for each mole of glucose consumed
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