Biology 2E: Metabolism Chapter 6 Review Quiz
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Questions and Answers

What is the totality of an organism's chemical reactions known as?

  • Exergonic reaction
  • Potential energy
  • Kinetic energy
  • Metabolism (correct)
  • Which type of pathway breaks down complex molecules into simpler compounds?

  • Catabolic pathway (correct)
  • Anabolic pathway
  • Activation energy
  • Endergonic reaction
  • What is defined as the capacity to cause change or do work?

  • Exergonic reaction
  • Energy (correct)
  • Potential energy
  • ATP
  • Which type of reaction requires an input of energy and does not occur spontaneously?

    <p>Endergonic reaction</p> Signup and view all the answers

    What is the energy required for a reaction to occur known as?

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

    Which molecule is considered the cell's energy source and has high-energy bonds between phosphate groups?

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

    When does CO2 fixation occur in CAM photosynthesis?

    <p>At night</p> Signup and view all the answers

    In CAM photosynthesis, where does the Calvin cycle occur?

    <p>During the day</p> Signup and view all the answers

    Which method of local signaling involves cell junctions directly connecting adjacent cells?

    <p>Direct contact</p> Signup and view all the answers

    What is the characteristic of paracrine signaling in animals?

    <p>Involving secreted messenger molecules</p> Signup and view all the answers

    In autocrine signaling, where does the ligand bind?

    <p>Receptors on the signaling cell</p> Signup and view all the answers

    What is a key difference between C4 and CAM photosynthesis?

    <p>The time of CO2 fixation</p> Signup and view all the answers

    What is the primary function of chloroplasts in the process of photosynthesis?

    <p>Capturing solar energy and converting it into chemical energy</p> Signup and view all the answers

    Which statement accurately describes chemoautotrophs?

    <p>They rely on inorganic compounds to make food</p> Signup and view all the answers

    How do heterotrophs obtain organic material for sustenance?

    <p>By consuming other living organisms</p> Signup and view all the answers

    Where does photosynthesis primarily occur in plant cells?

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

    What role do decomposers play in the ecosystem?

    <p>Consume dead organic material or feces</p> Signup and view all the answers

    Why do almost all heterotrophs, including humans, depend on photoautotrophs for food?

    <p>Because heterotrophs cannot produce their own food from inorganic sources</p> Signup and view all the answers

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