Biochemistry - Glycolysis

Exercise :: Glycolysis - Section 1

  • Glycolysis - Section 1
16. 

Which of the following could act as an uncoupler of electron transport and ATP synthesis?

A. The Fo base-piece of ATP synthase (without the Fl subunit)
B. Dinitrophenol
C. neither (a) nor (b)
D. Both (a) and (b)

Answer: Option D

Explanation:

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17. 

Which of the following is not a mechanism for altering the flux of metabolites through the rate-determining step of a pathway?

A. Allosteric control of the enzyme activity
B. Diffusional coupling between adjacent active sites
C. Genetic control of the enzyme concentration
D. Covalent modification of the enzyme

Answer: Option B

Explanation:

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18. 

Phosphofructokinase, the major flux-controlling enzyme of glycolysis is allosterically inhibited and activated respectively by

A. ATP and PEP
B. AMP and Pi
C. ATP and ADP
D. Citrate and ATP

Answer: Option C

Explanation:

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19. 

Which of the following regulates glycolysis steps?

A. Phosphofructokinase
B. Hexose kinase
C. Pyruvate kinase
D. All of these

Answer: Option D

Explanation:

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20. 

During glycolysis, the major energy generating step involves

A. pyruvate kinase
B. phosphoglycerate kinase
C. glyceraldehyde-3 -dehydrogenase
D. Phosphofructokinase

Answer: Option C

Explanation:

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