Feedback Mechanisms Quiz
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Questions and Answers

What process helps the kidneys expel more salt?

  • Chemiosmosis (correct)
  • Glycolysis
  • Acetyl CoA
  • Lactate Coz
  • In the human body, which molecule acts as the final electron acceptor in the electron transport chain?

  • Carbon sugars (glucose)
  • ATP synthase
  • Pyruvate
  • Oxygen (correct)
  • Which process occurs in the mitochondria and produces ATP?

  • Phosphorylation
  • Substrate level phosphorylation
  • Citric acid cycle (correct)
  • Glycolysis
  • What is the main function of ATP synthase in cellular respiration?

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

    Which process involves a feedback loop that helps control human body temperature?

    <p>Negative feedback mechanism</p> Signup and view all the answers

    During which step of metabolism is Acetyl CoA produced?

    <p>Lactate Coz</p> Signup and view all the answers

    What is the purpose of a feedback mechanism in the human body?

    <p>To maintain stability and regulate internal conditions</p> Signup and view all the answers

    In the context of body temperature regulation, which type of feedback system is described as a 'negative feedback loop'?

    <p>A system where the output decreases the disturbance in temperature</p> Signup and view all the answers

    Which best describes the role of a sensor in a feedback mechanism?

    <p>To detect changes or disturbances and signal the corrective response</p> Signup and view all the answers

    Why is negative feedback important in maintaining homeostasis?

    <p>To counteract changes and regulate internal conditions</p> Signup and view all the answers

    In the context of blood pressure regulation, which best describes a positive feedback mechanism?

    <p>A mechanism that increases blood pressure further when it rises</p> Signup and view all the answers

    How does a negative feedback loop in temperature regulation differ from a positive feedback loop?

    <p>Negative feedback counteracts temperature changes, while positive feedback intensifies them.</p> Signup and view all the answers

    What is the main purpose of negative feedback mechanisms in the human body?

    <p>To maintain stability despite physiological changes</p> Signup and view all the answers

    In the context of body temperature regulation, what is the role of the effectors when the temperature rises above 37°C?

    <p>To initiate sweating to cool down the body</p> Signup and view all the answers

    Which brain region plays a critical role in controlling body temperature through negative feedback mechanisms?

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

    What is the function of positive feedback mechanisms in the human body?

    <p>To amplify responses and reinforce changes</p> Signup and view all the answers

    How does the body respond to dehydration according to the text?

    <p>By increasing water intake</p> Signup and view all the answers

    What happens when osmolality of plasma increases in the body?

    <p>Kidneys reduce water reabsorption</p> Signup and view all the answers

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