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.

In this section, you'll find a wide range of Principles of Bioenergetics and Glycolysis mcq questions that explore various aspects of Principles of Bioenergetics and Glycolysis problems. Each MCQ is crafted to challenge your understanding of Principles of Bioenergetics and Glycolysis principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Biochemistry tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Principles of Bioenergetics and Glycolysis MCQs are your pathway to success in mastering this essential Biochemistry topic.

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Principles of Bioenergetics and Glycolysis MCQs | Page 5 of 23

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Q41.
When concentration of the reactants is higher than the equilibrium concentration then

a.

the gibbs free energy will be positive

b.

the gibbs free energy will be negative

c.

more products will be formed

d.

both (b) and (c)

Discuss
Answer: (d).both (b) and (c)
Q42.
Which of the following is not true of glycolysis?

a.

ADP is phosphorylated to ATP via substrate level phosphorylation

b.

The pathway does not require oxygen

c.

The pathway oxidizes two moles of NADH to NAD+ for each mole of glucose that enters

d.

The pathway requires two moles of ATP to get started catabo-lizing each mole of glucose

Discuss
Answer: (c).The pathway oxidizes two moles of NADH to NAD+ for each mole of glucose that enters
Q43.
In glycolysis, ATP is formed by the transfer of a high-energy phosphate from 1,3-bisphosphoglycerate to ADR No such high-energy phosphate donor has ever been isolated in mitochondria because

a.

the techniques for isolating the phosphate donor are not refined enough

b.

no such phosphate donor exists

c.

the high-energy phosphate donor is very short-lived and difficult to isolate

d.

None of the above

Discuss
Answer: (b).no such phosphate donor exists
Q44.
ATP is from which general category of molecules?

a.

Polysaccharides

b.

Proteins

c.

Nucleotides

d.

Amino acids

Discuss
Answer: (c).Nucleotides
Q45.
The glycolytic pathway (glucose → 2 pyruvate) is found

a.

in all living organisms

b.

primarily in animals excluding particles

c.

only in eukaryotes

d.

only in yeast

Discuss
Answer: (a).in all living organisms
Q46.
Glycolytic pathway regulation involves

a.

allosteric stimulation by ADP

b.

allosteric inhibition by ATP

c.

feedback, or product, inhibition by ATP

d.

all of the above

Discuss
Answer: (d).all of the above
Q47.
During catabolism, only about 40% of the energy available from oxidizing glucose is used to synthesize ATP. Remaining 60%

a.

is lost as heat

b.

is used to reduce NADP

c.

remains in the products of metabolism

d.

is stored as fat.

Discuss
Answer: (a).is lost as heat
Q48.
Why does the glycolytic pathway continue in the direction of glucose catabolism?

a.

There are essentially three irreversible reactions that act as the driving force for the pathway

b.

High levels of ATP keep the pathway going in a forward direction

c.

The enzymes of glycolysis only function in one direction

d.

Glycolysis occurs in either direction

Discuss
Answer: (a).There are essentially three irreversible reactions that act as the driving force for the pathway
Q49.
The released energy obtained by oxidation of glucose is stored as

a.

a concentration gradient across a membrane

b.

ADP

c.

ATP

d.

NAD+

Discuss
Answer: (c).ATP
Q50.
A kinase is an enzyme that

a.

removes phosphate groups of substrates

b.

uses ATP to add a phosphate group to the substrate

c.

uses NADH to change the oxidation state of the substrate

d.

removes water from a double bond

Discuss
Answer: (b).uses ATP to add a phosphate group to the substrate
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