Carbohydrate problems
- 1. The cells dependent solely on glucose as an energy source are
Options- A. muscle cells
- B. brain cells
- C. kidney cells
- D. liver cells Discuss
Correct Answer: brain cells
- 2. Hexokinase activity in glycolysis is inhibited by
Options- A. glucose 6- phosphate
- B. fructose 6-phosphate
- C. fructose 1,6 biphosphate
- D. phosphofructokinase Discuss
Correct Answer: glucose 6- phosphate
- 3. Humans are unable to digest
Options- A. starch
- B. complex carbohydrates
- C. denatured proteins
- D. cellulose Discuss
Correct Answer: cellulose
- 4. Saliva contains all of the following except
Options- A. hormones
- B. amylase
- C. bacteria-killing enzymes
- D. antibodies Discuss
Correct Answer: hormones
- 5. The main site for gluconeogenesis is
Options- A. kidney
- B. liver
- C. brain
- D. muscle Discuss
Correct Answer: liver
- 6. Which of the following compounds is responsible for coordinated regulation of glucose and glycogen metabolism?
Options- A. NAD+
- B. Fructose 2,6 bisphosphate
- C. Acetyl-CoA
- D. Fructose 1,6 bisphosphate Discuss
Correct Answer: Fructose 2,6 bisphosphate
- 7. The NAG6 substrate is hydrolyzed by human lysozyme to form
Options- A. 6 glucosamines + 6 acetic acids
- B. NAG4 + NAG2
- C. NAG3 + NAG3
- D. NAG3 Discuss
Correct Answer: NAG4 + NAG2
- 8. The conversion of pyruvate to oxaloacetate
Options- A. requires biotin
- B. involves the fixation of carbon dioxide
- C. occurs in the mitochondria
- D. all of the above Discuss
Correct Answer: requires biotin
- 9. The glycosidic bond
Options- A. in maltose is not hydrolyzed in lactose intolerant humans
- B. in sucrose is hydrolyzed by bees
- C. joins glucose and fructose to form sucrose
- D. both (b) and (c) Discuss
Correct Answer: both (b) and (c)
- 10. Pyruvate is initially converted to which of the following in the gluconeogenesis?
Options- A. Glycerol
- B. Phosphoenol pyruvate
- C. Oxaloacetate
- D. Acetyl CoA Discuss
Correct Answer: Oxaloacetate
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