Function & Shape in Biology
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Questions and Answers

Why is it difficult to drive a car with square wheels?

  • Square wheels cannot maintain proper shape for smooth driving.
  • Square wheels don't have enough traction. (correct)
  • Square wheels don't fit the round shape of the axles.
  • Square wheels are too heavy to move.

    • What happens to an enzyme if it loses its specific shape?

  • It changes into a different type of enzyme.
  • It becomes inactive and cannot perform its job. (correct)
  • It becomes resistant to environmental conditions.
  • It becomes more efficient in its function.

    • Which molecule helps speed up biochemical reactions?

  • Lipids
  • Hormones
  • Enzymes (correct)
  • Proteins

    • How does the text explain the relation between function and shape in biology?

    <p>Shape is crucial for proper function in biology. (A)</p> Signup and view all the answers

    What can happen to an enzyme under unfavorable environmental conditions?

    <p>It loses its specific shape and function. (A)</p> Signup and view all the answers

    Why is hormonal action considered an example of the intersection of biological function and shape?

    <p>Hormones rely on their shape to function properly. (C)</p> Signup and view all the answers

    In what way can enzymes be compared to paperclips according to the text?

    <p>Both unravel and become useless when they lose their specific shapes. (C)</p> Signup and view all the answers

    What is the analogy used to explain how hormones work in the body?

    <p>Key and lock (D)</p> Signup and view all the answers

    Why can't a hormone deliver its message unless it binds to the target's receptor?

    <p>The hormone needs to have the appropriate shape to bind (B)</p> Signup and view all the answers

    Which hormone can tell the heart to beat faster by binding to beta-1 receptors?

    <p>Epinephrine (C)</p> Signup and view all the answers

    What is the main biological function of antibodies in the immune system?

    <p>To attach to antigens in the body (C)</p> Signup and view all the answers

    How does the text explain the relationship between antibodies and antigens?

    <p>Antibodies use hooks to attach to antigens (B)</p> Signup and view all the answers

    Why does ghrelin not cause the heart to beat faster like epinephrine?

    <p>It does not have the proper shape to fit beta-1 receptors (D)</p> Signup and view all the answers

    What would happen if an antibody's shape did not match that of an antigen?

    <p>It would fail to latch onto the antigen effectively (D)</p> Signup and view all the answers

    How does the text suggest that an antibody's function is similar to Velcro?

    <p>By resembling a hook that catches circular threads (B)</p> Signup and view all the answers

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