10-item Test On Energy Metabolism

10 Questions
10-item Test On Energy Metabolism

MULTIPLE CHOICETest your knowledge in carbohydrate metabolism. You have 4 minutes to complete the test.

Sample Question

Which of the following statements is true about catabolic pathways?

They combine molecules into more complex and energy-rich molecules.

They are usually coupled with anabolic pathways to which they supply energy in the form of ATP.

They involve endothermic reactions that break complex molecules into simpler ones.

They do not need enzyme catalysts.

They build up complex molecules such as proteins from amino acids.

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Questions and Answers
  • 1. 
    • A. 

      They combine molecules into more complex and energy-rich molecules.

    • B. 

      They are usually coupled with anabolic pathways to which they supply energy in the form of ATP.

    • C. 

      They involve endothermic reactions that break complex molecules into simpler ones.

    • D. 

      They do not need enzyme catalysts.

    • E. 

      They build up complex molecules such as proteins from amino acids.

  • 2. 
    The hydrolysis of sucrose by the enzyme sucrase results in
    • A. 

      Bringing glucose and fructose together to form sucrose.

    • B. 

      Utilization of water as a glycosidic linkage is formed between glucose and fructose.

    • C. 

      Combination of glucose and fructose to form sucrase.

    • D. 

      The addition of free water to sucrose as the linkage between glucose and fructose is formed.

    • E. 

      Breaking the bond between glucose and fructose by breaking a water molecule and adding an H+ to one and an OH- to the other.

  • 3. 
    Which term most precisely describes the general process of combining small molecules to form large molecules ?
    • A. 

      Exothermic reaction

    • B. 

      Dehydration reaction.

    • C. 

      Metabolism

    • D. 

      Catabolism

    • E. 

      Anabolism

  • 4. 
    After digestion, what happens when glucose is not immediately metabolized or converted to glycogen?
    • A. 

      It is directed towards the large intestine where it is immediately excreted in the form of feces.

    • B. 

      It is reabsorbed in the small intestine.

    • C. 

      Hyperglycemia will develop.

    • D. 

      Hypoglycemia will deveop.

    • E. 

      The blood will become acidic.

  • 5. 
    Which of the following statements does not describe glycolysis?
    • A. 

      It is an aerobic process.

    • B. 

      It is also known as the Embden-Meyerhoff pathway.

    • C. 

      It supplies the ATP needed for muscle contraction.

    • D. 

      It takes place in the cytoplasm of the cell.

    • E. 

      It breaks down a molecule of glucose to 2 molecules of pyruvate.

  • 6. 
    How many molecules of ATP are produced from the metabolism of 1 molecule of glucose?
    • A. 

      40

    • B. 

      36

    • C. 

      26

    • D. 

      12

    • E. 

      2

  • 7. 
    • A. 

      2 molecules of NADH.

    • B. 

      2 molecules of ADP.

    • C. 

      2 molecules of pyruvate.

    • D. 

      2 molecules of ATP.

  • 8. 
    The following conditions / processes will remove excess glucose from the blood except
    • A. 

      Glycogenesis.

    • B. 

      Glycogenolysis.

    • C. 

      Presence of insulin.

    • D. 

      Conversion to fat.

  • 9. 
    Which of the following functions is not performed by insulin?
    • A. 

      It promotes glucose absorption in the bloodstream.

    • B. 

      It increases cellular uptake of glucose.

    • C. 

      It inhibits glycogenolysis.

    • D. 

      It promotes the oxidation of glucose in the cell.

  • 10. 
    All of the following conditions may likely happen when carbohydrate is totally removed from the diet except
    • A. 

      The body will switch into preparing glucose from non-carbohydrate sources.

    • B. 

      The blood may become acidic due to the formation of ketone and acids as byproducts of the metabolism of fatty acids.

    • C. 

      The person may lose weight.

    • D. 

      Glucose may accumulate in the bloodstream resulting to hyperglycemia.