生物学 TPO45-L2 T-cells

TPO45-L2

T-cells



  1. What is the lecture mainly about?
  • A. The process by which immune cells are produced
  • B. The effects of consuming far fewer calories than usual
  • C. The function of an organ found in rhesus monkeys and in humans
  • D. The discovery of a nutrient necessary for good health

 

  1. Why does the professor mention the thymus?
  • A. To explain how different types of food are turned into energy
  • B. To give an example of an organ attacked by certain bacteria
  • C. To introduce a research study by a nutritional biologist
  • D. To answer a question about certain immune cells

 

  1. According to the professor, why are some cells called “naïve”?
  • A. They originate from a relatively primitive type of cell.
  • B. They are easily eliminated by the immune system.
  • C. They are not yet able to recognize any particular protein marker.
  • D. They can become part of any one of various organs of the body.

 

  1. In a recent study mentioned by the professor, what are two differences between the monkeys that have been fed a normal diet and the ones that have not?
    [CHOOSE 2 ANSWERS]
  • A. The monkeys on a normal diet appear older.
  • B. The monkeys on a normal diet get sick less often.
  • C. The monkeys on a normal diet have fewer naïve T cells.
  • D. The monkeys on a normal diet tend to live longer.

 

  1. What does the professor think about a calorie-restricted diet?
    [CHOOSE 2 ANSWERS]
  • A. She would not find it easy to follow.
  • B. She is not sure humans would benefit from it.
  • C. Doctors are not likely ever to recommend it for people.
  • D. It would probably affect humans differently than it affects monkeys.

 

  1. Listen again to part of the Lecture. Then answer the question.


       What does the professor mean when she says this: 🎧

  • A. Problems in the study make its conclusions difficult to believe.
  • B. The actual effect on mice was not what it seemed.
  • C. Other studies of mice produced different results.
  • D. Other animals seem to react as mice do.


答案:
A D C AC AB D

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