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- Question
For every one molecule of sugar glucose which is oxidized __________ molecule of pyruvic acid are produced.
Options- A. 1
- B. 2
- C. 3
- D. 4
- Correct Answer
- 2
- 1. During catabolism, only about 40% of the energy available from oxidizing glucose is used to synthesize ATP. Remaining 60%
Options- A. is lost as heat
- B. is used to reduce NADP
- C. remains in the products of metabolism
- D. is stored as fat. Discuss
- 2. Which of the following is not true of glycolysis?
Options- 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
- 3. Which of the following regulates glycolysis steps?
Options- A. Phosphofructokinase
- B. Hexose kinase
- C. Pyruvate kinase
- D. All of these Discuss
- 4. Phosphofructokinase, the major flux-controlling enzyme of glycolysis is allosterically inhibited and activated respectively by
Options- A. ATP and PEP
- B. AMP and Pi
- C. ATP and ADP
- D. Citrate and ATP Discuss
- 5. 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
Options- 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
- 6. The amount of energy received from one ATP is
Options- A. 76 kcal
- B. 7.3 kcal
- C. 760 kcal
- D. 1000 kcal Discuss
- 7. Fructose-2,6-bisphosphate
Options- A. activates fructose-1,6-bisphosphatase
- B. activates phosphofructokinase
- C. inhibits fructose-1,6-bisphosphatase
- D. both (b) and (c) Discuss
- 8. The active form of glycogen phosphorylase is phosphorylated, while the dephosphorylation of which active form occurs?
Options- A. Glycogen synthase
- B. Glycogen semisynthase
- C. Glycogen hydrolase
- D. Glycogen dehydrogenase Discuss
- 9. When concentration of the reactants is higher than the equilibrium concentration then
Options- 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
- 10. Which of the following could act as an uncoupler of electron transport and ATP synthesis?
Options- A. The Fo base-piece of ATP synthase (without the Fl subunit)
- B. Dinitrophenol
- C. neither (a) nor (b)
- D. Both (a) and (b) Discuss
Glycolysis problems
Search Results
Correct Answer: is lost as heat
Correct Answer: The pathway oxidizes two moles of NADH to NAD+ for each mole of glucose that enters
Correct Answer: All of these
Correct Answer: ATP and ADP
Correct Answer: no such phosphate donor exists
Correct Answer: 7.3 kcal
Correct Answer: both (b) and (c)
Correct Answer: Glycogen synthase
Correct Answer: both (b) and (c)
Correct Answer: Both (a) and (b)
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