Lesson 15: Electrons and Energy in Living Systems
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Questions and Answers

What is the process of changing energy from one form to another known as?

  • Bioenergetics
  • Cellular respiration
  • Photosynthesis
  • Energy conversion (correct)
  • Which molecule is derived from vitamin B3 and is involved in energy transfer in cells?

  • NADH (correct)
  • Niacinamide
  • NADPH
  • FAD
  • What do autotrophs do that heterotrophs cannot?

  • Digest plant and animal matter
  • Use cellular respiration
  • Produce their own food (correct)
  • Obtain energy from the Sun
  • Which molecule is involved in carrying high-energy electrons during the process of cellular respiration?

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

    What is the primary source of energy for most life forms on Earth?

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

    What outlines who eats whom in an ecosystem?

    <p>Food web</p> Signup and view all the answers

    What is the oxidized form of the electron carrier NAD?

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

    Which compound is derived from vitamin B2 and serves as an electron carrier molecule?

    <p>FADH2</p> Signup and view all the answers

    What is the reduced form of the molecule FAD?

    <p>FADH2</p> Signup and view all the answers

    Which compound plays an important role in anabolic reactions and photosynthesis?

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

    In which process is ATP used for energy, resulting in the production of ADP or AMP?

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

    Which compound allows the cell to store energy briefly and transport it within the cell to support chemical reactions?

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

    What is the principal function of electron carriers in living systems?

    <p>Carrying high energy electrons between compounds</p> Signup and view all the answers

    Which compound contains an extra phosphate group and plays a role in photosynthesis?

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

    Which reaction releases energy?

    <p>Oxidative phosphorylation</p> Signup and view all the answers

    What happens to ATP when it is used for energy in a reaction?

    <p>It is converted to ADP or AMP, releasing energy.</p> Signup and view all the answers

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