Metabolic Processes and Enzymes
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Questions and Answers

Which enzyme is the rate-determining step in glycolysis?

  • Glycogen synthase
  • Fructose-1,6-bisphosphatase 1
  • Phosphofructokinase-1 (PFK-1) (correct)
  • Glucose-6-phosphate dehydrogenase (G6PD)

    • What is the role of citrate in the regulation of enzymes?

  • Inhibits the enzyme HMG-CoA synthase
  • Inhibits the enzyme acetyl-CoA carboxylase (correct)
  • Activates the enzyme phosphofructokinase-1
  • Activates the enzyme HMG-CoA reductase

    • Which enzyme is involved in the regulation of cholesterol synthesis?

  • HMG-CoA reductase (correct)
  • Acetyl-CoA carboxylase
  • Carnitine acyltransferase I
  • HMG-CoA synthase

    • What is the role of glucose-6-phosphate in the regulation of enzymes?

    <p>Activates the enzyme glycogen synthase</p> Signup and view all the answers

    Which enzyme is involved in the regulation of fatty acid oxidation?

    <p>Carnitine acyltransferase I</p> Signup and view all the answers

    What is the role of AMP in the regulation of enzymes?

    <p>Activates the enzyme phosphofructokinase-1</p> Signup and view all the answers

    Which enzyme is involved in the regulation of glycogenolysis?

    <p>Glycogen phosphorylase</p> Signup and view all the answers

    Which enzyme is involved in the regulation of glycogenesis?

    <p>Glycogen synthase</p> Signup and view all the answers

    What is the effect of ATP on the regulation of glycolysis?

    <p>Inhibition of glycolysis</p> Signup and view all the answers

    Which of the following is a regulator of the urea cycle?

    <p>N-acetylglutamate</p> Signup and view all the answers

    What is the effect of insulin on glycogen metabolism?

    <p>Stimulation of glycogen synthesis</p> Signup and view all the answers

    Which enzyme is involved in the regulation of fatty acid synthesis?

    <p>Acetyl-CoA carboxylase (ACC)</p> Signup and view all the answers

    What is the role of cortisol in carbohydrate metabolism?

    <p>Stimulation of glycogenolysis</p> Signup and view all the answers

    Which of the following is a regulator of cholesterol synthesis?

    <p>Thyroxine</p> Signup and view all the answers

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