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- Question
The released energy obtained by oxidation of glucose is stored as
Options- A. a concentration gradient across a membrane
- B. ADP
- C. ATP
- D. NAD+
- Correct Answer
- ATP
- 1. Glycogen has
Options- A. ?-1,4 linkage
- B. ?-1,6 linkages
- C. ?-1,4 and ?-1,6 linkages
- D. ?-1,4 and ?-1,6 linkage Discuss
- 2. Glucose from the breakdown of glycogen is obtained in
Options- A. the liver by phosphorolysis
- B. the muscles by phosphorolysis
- C. the muscles by hydrolysis
- D. both (a) and (b) Discuss
- 3. In the glycogen synthase reaction, the precursor to glycogen is
Options- A. glucose-6-P
- B. UTP-glucose
- C. UDP-glucose
- D. glucose-1-P Discuss
- 4. Glycolytic pathway regulation involves
Options- A. allosteric stimulation by ADP
- B. allosteric inhibition by ATP
- C. feedback, or product, inhibition by ATP
- D. all of the above Discuss
- 5. Which of the following is not a mechanism for altering the flux of metabolites through the rate-determining step of a pathway?
Options- 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 Discuss
- 6. 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
- 7. 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
- 8. Which of the following regulates glycolysis steps?
Options- A. Phosphofructokinase
- B. Hexose kinase
- C. Pyruvate kinase
- D. All of these Discuss
- 9. 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
- 10. 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
Glycolysis problems
Search Results
Correct Answer: ?-1,4 and ?-1,6 linkages
Correct Answer: both (a) and (b)
Correct Answer: UDP-glucose
Correct Answer: all of the above
Correct Answer: Diffusional coupling between adjacent active sites
Correct Answer: no such phosphate donor exists
Correct Answer: ATP and ADP
Correct Answer: All of these
Correct Answer: The pathway oxidizes two moles of NADH to NAD+ for each mole of glucose that enters
Correct Answer: is lost as heat
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