Enzymes and Substrate Conversion
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Questions and Answers

What is the symbolic representation of converting a substrate into a product by enzymes?

  • S → E
  • E → P
  • S → P (correct)
  • P → S
  • Where does the substrate need to bind to the enzyme for the reaction to occur?

  • In the cytoplasm of the enzyme
  • In the nucleus of the enzyme
  • On the surface of the enzyme
  • Within the enzyme's active site (correct)
  • What is formed when a substrate binds to the enzyme's active site?

  • 'ES' complex (correct)
  • 'EP' complex
  • 'PE' complex
  • 'SE' complex
  • Which term describes the new structure of the substrate when it is bound to the enzyme's active site?

    <p>Transition state structure</p> Signup and view all the answers

    What is the role of enzymes in lowering the activation energy of a reaction?

    <p>Stabilizing the transition state structure</p> Signup and view all the answers

    Which term describes the unstable structural states between the stable substrate and product in an enzymatic reaction?

    <p>'Altered structural states'</p> Signup and view all the answers

    What is the role of enzymes in reducing the activation energy?

    <p>Lowering the activation energy</p> Signup and view all the answers

    Why is the formation of enzyme-substrate complex (ES) essential for catalysis?

    <p>To facilitate catalysis</p> Signup and view all the answers

    What is the function of the active site in an enzyme?

    <p>Facilitate substrate binding and catalysis</p> Signup and view all the answers

    How do enzymes differ from inorganic catalysts in terms of specificity?

    <p>Enzymes are more specific than inorganic catalysts</p> Signup and view all the answers

    Which molecule is short-lived and dissociates into product(s) and the unchanged enzyme during enzyme action?

    <p>Enzyme-substrate complex (ES)</p> Signup and view all the answers

    What is the term used to describe the difference in average energy content between 'S' and the transition state in an enzyme-catalyzed reaction?

    <p>'Activation energy'</p> Signup and view all the answers

    What is the primary structure of an enzyme like?

    <p>Amino acid sequence</p> Signup and view all the answers

    What is an active site of an enzyme?

    <p>A crevice or pocket where the substrate fits</p> Signup and view all the answers

    What is a major difference between enzyme catalysts and inorganic catalysts?

    <p>Inorganic catalysts work efficiently at high temperatures</p> Signup and view all the answers

    What is one important quality of enzymes isolated from thermophilic organisms?

    <p>Thermal stability even at high temperatures</p> Signup and view all the answers

    What are ribozymes?

    <p>Enzymes with RNA as their catalytic subunit</p> Signup and view all the answers

    How do enzymes differ from inorganic catalysts with respect to temperature?

    <p>Enzymes get damaged at high temperatures</p> Signup and view all the answers

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