Enzyme Regulation and Function Quiz
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Questions and Answers

What is the main function of enzyme regulators?

  • Alter the amount of enzyme (correct)
  • Activate fatty acids
  • Bind to the active site of enzymes
  • Contain niacin and act as hydrogen carriers
  • Which term refers to the small molecules that bind to the allosteric site of enzymes?

  • Concentration of enzyme
  • Simple pepsin
  • Covalent modification (correct)
  • Concentration of substrate
  • What is the main function of non-protein parts known as 'coenzymes'?

  • Inhibit enzymes between pH 5 to 9
  • Bind to the active site of enzymes
  • Contain pantothenic acid and act as hydrogen carriers (correct)
  • Activate fatty acids
  • What happens to enzyme activity if the concentration of inhibitors increases?

    <p>It becomes inversely proportional</p> Signup and view all the answers

    At what temperature does most enzymes exhibit their optimum activity?

    <p>45ºC</p> Signup and view all the answers

    What is the effect of increasing or decreasing the pH on enzyme activity?

    <p>Most enzymes have an optimum pH, and deviation affects their activity</p> Signup and view all the answers

    What is the role of coenzyme A in enzymatic reactions?

    <p>Activate fatty acids</p> Signup and view all the answers

    'Holoenzymes' consist of:

    <p>'Apoenzymes' and 'coenzymes'</p> Signup and view all the answers

    'Allosteric regulation' involves:

    <p>'Small molecules binding to allosteric sites'</p> Signup and view all the answers

    Which vitamin deficiency is characterized by easily bruised skin, capillary fragility, muscle fatigue, and decreased wound healing?

    <p>Vitamin C</p> Signup and view all the answers

    What is the function of Vitamin B (Cobalamins)?

    <p>Acts as a coenzyme in protein metabolism</p> Signup and view all the answers

    What is the main function of Vitamin E?

    <p>Prevents peroxidation of polyunsaturated membrane fatty acids</p> Signup and view all the answers

    Which vitamin deficiency leads to defective blood clotting and hemorrhage?

    <p>Vitamin K</p> Signup and view all the answers

    What is the function of Vitamin B1 (Thiamine)?

    <p>Acts as a coenzyme in protein metabolism</p> Signup and view all the answers

    Which vitamin is a component of the visual pigments of the eye and is involved in the formation of healthy connective tissues, bones, and teeth?

    <p>Vitamin A</p> Signup and view all the answers

    What are the clinical manifestations of a deficiency of Vitamin A?

    <p>Night blindness and hyperkeratinization of the cornea</p> Signup and view all the answers

    Which vitamin functions primarily to regulate calcium and phosphorous homeostasis?

    <p>Vitamin D</p> Signup and view all the answers

    What is the main function of most vitamins mentioned in the passage?

    <p>Serve as cofactors for enzymatic reactions</p> Signup and view all the answers

    Which vitamin has anti-oxidant activity, reducing the risk of cancers?

    <p>Vitamin E</p> Signup and view all the answers

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