Discussion
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- Question
Which of the following characteristic enzymes of gluconeogensis is not found in the cytosol?
Options- A. Pyruvate carboxlyase
- B. Fructose-l,6-bisphosphatase
- C. Both (a) and (b)
- D. Glucose-6-phosphatase
- Correct Answer
- Pyruvate carboxlyase
- 1. Regulated metabolic pathways are
Options- A. compartmentalized in eukaryotes
- B. usually regulated at the first step
- C. committed after the first step
- D. all of these Discuss
- 2. The hormones, glucagon and epinephrine, stimulate glycogen breakdown to G-6-P
Options- A. only in the liver
- B. using ATP as the phosphoryl donor
- C. directly, by binding to glycogen phosphorylase
- D. indirectly, by first stimulating adenylate cyclase to make cAMP Discuss
- 3. The process not involved in the formation of glucose by gluconeo-genesis is
Options- A. the conversion of oxaloacetate to glucose
- B. the conversion of lactate to pyruvate
- C. the dephosphorylation of glucose-6-phosphate
- D. all of the above Discuss
- 4. Which of the following enzymes plays an important role in the Cori " cycle?
Options- A. Glucokinase
- B. Glucose-6-phosphate dehydrogenase
- C. Lactate dehydrogenase
- D. Glucose isomerase Discuss
- 5. Each reaction in a metabolic pathway is
Options- A. reversible
- B. irreversible
- C. catalyzed by a specific enzyme
- D. controlled by the end product Discuss
- 6. Metabolic reactions that break down complex molecules into smaller compounds, thereby releasing usable energy for the cell, are best described as
Options- A. biosynthetic
- B. catabolic
- C. catalytic
- D. photosynthetic Discuss
- 7. What would be the molecular formula for a polymer made by linking ten glucose molecules together by dehydration synthesis, if molecular formula for glucose is C6H,206?
Options- A. C60H100O50
- B. C60H120O60
- C. C60H102O51
- D. (C6H12O6)10 Discuss
- 8. An intermediate which inhibits the activity of fructose 1,6 diphos-phatase would inhibit
Options- A. glycolysis
- B. pyrolysis
- C. gluconeogenesis
- D. none of these Discuss
- 9. What is the consensus N-glycosylation site in a protein sequence?
Options- A. Asn-Xaa-(Ser or Thr)
- B. (Ser or Thr)-Asn-Ala
- C. Thr-(Asn or Gln)-Ala
- D. None of these Discuss
- 10. Patients suffering from Von Gierke's disease are unable to perform gluconeogeneis because they have a defective
Options- A. lactate dehydrogenase
- B. glucose 6 phosphatase
- C. pyruvate carboxylase
- D. none of these Discuss
Carbohydrate problems
Search Results
Correct Answer: all of these
Correct Answer: indirectly, by first stimulating adenylate cyclase to make cAMP
Correct Answer: the conversion of oxaloacetate to glucose
Correct Answer: Lactate dehydrogenase
Correct Answer: catalyzed by a specific enzyme
Correct Answer: catabolic
Correct Answer: C60H102O51
Correct Answer: gluconeogenesis
Correct Answer: Asn-Xaa-(Ser or Thr)
Correct Answer: glucose 6 phosphatase
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