Carbohydrate problems
- 1. The conversion of pyruvate to lactate is catalysed by
Options- A. pyruvate carboxylase
- B. lactate dehydrogenase
- C. pyruvate dismutase
- D. pyruvate decarboxylase Discuss
Correct Answer: lactate dehydrogenase
- 2. Insulin
Options- A. stimulates gluconeogenesis and glycolysis
- B. stimulates gluconeogenesis and inhibits glycolysis
- C. inhibits gluconeogenesis and glycolysis
- D. inhibits gluconeogenesis and stimulates glycolysis Discuss
Correct Answer: inhibits gluconeogenesis and stimulates glycolysis
- 3. Which of the following would be considered a part of metabolism?
Options- A. Biosynthetic pathways that build DNA
- B. Catabolic pathways that break down complex carbohydrates
- C. The capture of light energy for use in making glucose
- D. All of the above Discuss
Correct Answer: All of the above
- 4. Which of the following is not involved in the biosynthesis of DNA?
Options- A. Energy from ATP
- B. Mononucleotides
- C. Carbonic anhydrase
- D. Enzymes Discuss
Correct Answer: Carbonic anhydrase
- 5. Which of the following is not a disaccharide?
Options- A. Amylose
- B. Cellobiose
- C. Lactose
- D. None of these Discuss
Correct Answer: Amylose
- 6. The production or break down of __________ is often coupled with the metabolic reactions of biosynthesis and catabolism.
Options- A. aspirin
- B. DNA
- C. ATP
- D. CO2 Discuss
Correct Answer: ATP
- 7. Glucagon and epinephrine
Options- A. inhibits gluconeogenesis and stimulates glycolysis
- B. stimulates gluconeogenesis and glycolysis
- C. stimulates gluconeogenesis and inhibits glycolysis
- D. inhibits gluconeogenesis and glycolysis Discuss
Correct Answer: stimulates gluconeogenesis and inhibits glycolysis
- 8. Which of the following statements about the energy needs of cells is false?
Options- A. Without a continuous input of energy, cell disorder will increase
- B. The laws of thermodynamics force cells to acquire energy
- C. Many cellular reactions have an associated activation energy
- D. The most usable energy for cells comes from the rapid combustion of glucose Discuss
Correct Answer: The most usable energy for cells comes from the rapid combustion of glucose
- 9. The sugar which forms major component of nucleic acids is
Options- A. ribose
- B. galactose
- C. mannose
- D. maltose Discuss
Correct Answer: ribose
- 10. Fructose is metabolized by
Options- A. fructose 1-phosphate pathway
- B. fructose 6-phosphate pathway
- C. glyceraldehyde 3-phosphate pathway
- D. both (a) and (b) Discuss
Correct Answer: both (a) and (b)
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