Digestive Enzymes
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Questions and Answers

What is the result of the complementary nature between the shape of the active site on the enzyme and its substrate(s)?

  • The enzyme binds to multiple substrates
  • The enzyme becomes denatured
  • The specificity of an enzyme is achieved (correct)
  • The lock and key model is disproven

    • Why do enzymes have specific three-dimensional shapes?

  • Because they are formed from carbohydrate molecules
  • Because they are formed from protein molecules (correct)
  • Because they are formed from DNA molecules
  • Because they are formed from lipid molecules

    • What determines the shape of an enzyme?

  • The type of carbohydrate molecules
  • The order of nucleotides
  • The type of lipid molecules
  • The order of amino acids (correct)

    • What is the 'lock and key theory' used to explain?

    <p>Enzyme action</p> Signup and view all the answers

    What happens when an enzyme and its complementary substrate collide?

    <p>An enzyme-substrate complex forms, and the reaction occurs</p> Signup and view all the answers

    What forms from the substrate(s) during an enzyme-substrate reaction?

    <p>A product (or products)</p> Signup and view all the answers

    What is the role of the active site of an enzyme?

    <p>To bind to a specific substrate</p> Signup and view all the answers

    What is the function of an enzyme in a living organism?

    <p>To catalyse specific chemical reactions</p> Signup and view all the answers

    What is the primary role of enzymes in biological reactions?

    <p>They speed up chemical reactions without being used up.</p> Signup and view all the answers

    Which enzyme breaks down starch into maltose?

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

    Where is amylase produced?

    <p>Salivary glands, pancreas, and small intestine</p> Signup and view all the answers

    Which group of enzymes is responsible for breaking down proteins?

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

    Where does protein digestion primarily take place?

    <p>Stomach and small intestine</p> Signup and view all the answers

    What do lipases break down?

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

    Where are lipase enzymes produced?

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

    What is one role of bile in the digestive system?

    <p>It neutralizes hydrochloric acid from the stomach.</p> Signup and view all the answers

    What is the primary purpose of digestion?

    <p>To convert large, insoluble molecules into smaller, soluble molecules</p> Signup and view all the answers

    Which enzyme is used to break down starch?

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

    What is the suggested temperature for controlling enzyme activity in an experiment using a water bath?

    <p>35℃</p> Signup and view all the answers

    Why is a colorimeter used in enzyme experiments?

    <p>To precisely quantify the progress of the reaction</p> Signup and view all the answers

    Which enzyme is responsible for breaking down proteins?

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

    What role does temperature play in enzyme activity experiments?

    <p>It affects the kinetic energy of molecules involved in the reaction</p> Signup and view all the answers

    Which statement describes enzymes denaturing?

    <p>The enzyme's active site changes shape, reducing its functionality</p> Signup and view all the answers

    What is the main function of a pH buffer in enzyme activity experiments?

    <p>To maintain a constant pH environment for the reactions</p> Signup and view all the answers

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