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Carbohydrate (Biochemistry) Question and Answers-Page first

Carbohydrate problems


  • 1. Gluconeogenesis uses

  • Options
  • A. 3 ATPs and 2 GTPs per glucose
  • B. 2 ATPs and 1 GTPs per glucose
  • C. 3 ATPs and 3 GTPs per glucose
  • D. 4 ATPs and 2 GTPs per glucose
  • Discuss
  • 2. Citric acid accumulation would

  • Options
  • A. stimulate phosphofructokinase activity
  • B. stimulate fructose 1,6 diphosphatase activity
  • C. inhibit phosphofructokinase activity
  • D. both (b) and (c)
  • Discuss
  • 3. Hydrolysis of lactose yields

  • Options
  • A. galactose and fructose
  • B. galactose and glucose
  • C. glucose and fructose
  • D. fructose and galactose
  • Discuss
  • 4. Which of the following is carried out when cAMP functions as a second messenger?

  • Options
  • A. Acts second in importance to AMP
  • B. Activates all cytosolic protein kinases
  • C. Activates the cAMP-dependent protein kinase
  • D. Acts outside the cell to influence cellular processes
  • Discuss
  • 5. The ultimate source of energy that sustains living systems is

  • Options
  • A. glucose
  • B. oxygen
  • C. sunlight
  • D. carbon dioxide
  • Discuss
  • 6. a-amylose is similar to

  • Options
  • A. ?-sheets
  • B. ?-turned coils
  • C. ?-helices
  • D. the hydrophobic core
  • Discuss
  • 7. How many ATP equivalents per mole of glucose input are required for gluconeogenesis?

  • Options
  • A. 2
  • B. 6
  • C. 8
  • D. 4
  • Discuss
  • 8. Boat and chair conformations are found

  • Options
  • A. in pyranose sugars
  • B. in any sugar without axial -OH groups
  • C. in any sugar without equatorial -OH groups
  • D. only in D-glucopyranose
  • Discuss
  • 9. Gluconeogenesis is the

  • Options
  • A. formation of glycogen
  • B. breakdown of glucose to pyruvate
  • C. breakdown of glycogen to glucose
  • D. synthesis of glucose from non-carbohydrate precursors
  • Discuss
  • 10. Under aerobic condition pyruvate is converted by pyruvate dehydrogenase to

  • Options
  • A. phosphoenol pyruvate
  • B. acetyl CoA
  • C. lactate
  • D. glyceraldehyde 3 phosphate
  • Discuss

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