生物学 TPO37-L4 Endotherms And Ectotherms

TPO37-L4

Endotherms And Ectotherms

Listen to part of a lecture in a biology class.

 


 

 

  1. What do the speakers mainly discuss?
  • A. Internal processes that help animals maintain constant metabolic rates.
  • B. Differences in how animals regulate their body temperatures.
  • C. Behaviors that help some animal species survive in extreme environments.
  • D. The difficulty of determining whether an animal is an endotherm or an ectotherm.

 

  1. According to the professor, what is distinctive about brown fat?
  • A. It produces large amounts of triglyceride.
  • B. It provides fuel for muscle movement.
  • C. It produces heat without muscle movement.
  • D. It insulates internal organs from the cold.

 

  1. Why does the professor mention elephants?
  • A. To contrast them with small animals that live in extremely cold environments.
  • B. To show an important behavioral difference between two mammal species.
  • C. To emphasize that body size helps determine an animal’s metabolic rate.
  • D. To indicate that endotherms may use behavior to help regulate body temperature.

 

  1. What does the professor emphasize about the metabolic rate of ectotherms?
  • A. It is regulated by taking short, quick breaths.
  • B. It varies throughout the day.
  • C. It is much slower than the metabolic rate of endotherms.
  • D. It increases to help the animals survive a sudden drop in temperature.

 

  1. What happens to an ectotherm in a temperature chamber?
  • A. It regulates its temperature by behaving in certain ways.
  • B. It shivers when the chamber’s temperature is lowered.
  • C. Its metabolism remains unchanged.
  • D. Its body temperature matches the temperature inside the chamber.

 

  1. Why does the professor says this: 🎧
  • A. To indicate that the student’s assertion is correct.
  • B. To introduce a fact she thinks will surprise the student.
  • C. To point out the effectiveness of the frog’s defense mechanisms.
  • D. To find out what the student knows about extreme environments.


答案:
B C D C D A

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