Biology: Cellular Respiration and Homeostasis
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Questions and Answers

What is the primary function of mitochondria in cellular respiration?

  • To generate and use ATP (correct)
  • To store oxygen for future use
  • To regulate body temperature
  • To synthesize proteins

    • What is the relationship between an animal's metabolic rate and its heat production?

  • The higher the metabolic rate, the higher the heat production (correct)
  • There is no correlation between metabolic rate and heat production
  • The lower the metabolic rate, the higher the heat production
  • The higher the metabolic rate, the lower the heat production

    • What is the primary source of oxygen for aquatic animals?

  • Water (correct)
  • Food
  • Air from the atmosphere
  • Soil

    • What is the role of ATP in cellular functions?

    <p>To power cell functions temporarily</p> Signup and view all the answers

    How many mitochondria are typically found in a cell?

    <p>More than 1000</p> Signup and view all the answers

    What are the three pathways that generate ATP from food?

    <p>Aerobic respiration, anaerobic respiration, and fermentation</p> Signup and view all the answers

    Which type of organism relies on its environment to regulate its body temperature?

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

    What is the primary purpose of vasodilation in thermoregulation?

    <p>To increase blood flow to the surface tissues under the skin</p> Signup and view all the answers

    What is the term for the temperature range over which an endothermic animal can maintain its metabolic rate and temperature without appreciable change?

    <p>Thermal Neutral Zone</p> Signup and view all the answers

    What is the primary difference between endotherms and ectotherms?

    <p>Endotherms can regulate their body temperature internally, while ectotherms rely on external sources</p> Signup and view all the answers

    What is the purpose of vasoconstriction in thermoregulation?

    <p>To reduce blood flow to the surface tissues under the skin</p> Signup and view all the answers

    What is the critical temperature range beyond which an endothermic animal's metabolic functions and cellular components are disrupted?

    <p>Critical Upper or Lower Temperatures</p> Signup and view all the answers

    What is the primary function of aerobic cellular respiration?

    <p>To release chemical energy to fuel cellular activity</p> Signup and view all the answers

    What is the term for the loss of water in the form of vapor, used for cooling down?

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

    What is the role of the hypothalamus in thermoregulation?

    <p>To monitor and adjust body temperature</p> Signup and view all the answers

    How do endothermic organisms maintain a relatively constant body temperature?

    <p>By generating heat through metabolism</p> Signup and view all the answers

    What is the direction of heat flow in a temperature gradient?

    <p>From warmer to cooler areas</p> Signup and view all the answers

    What is the process by which a cell recycles ATP?

    <p>By reconstituting ATP from ADP</p> Signup and view all the answers

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