环境科学 TPO42-L3 Fungi

环境科学

TPO42-L3 Fungi

Listen to part of a lecture in an environmental science class.

 



  1. What is the lecture mainly about?
  • A. Why fungi cannot grow well in polluted ecosystems
  • B. Why fungi pose a danger to the underground water system
  • C. How to prevent heavy metals from getting into the soil
  • D. How fungi can clean up pollution that is in the soil

 

  1. What does the professor say about the way fungi get their food?
  • A. They use certain metal compounds in the soil as nutrients.
  • B. The enzymes that they produce allow them to absorb organic nutrients from the soil.
  • C. They separate nutrients from heavy metals and then return the metals to the soil.
  • D. Heavy metals interfere with their way of getting nutrients from the soil.

 

  1. What two points does the professor make about chitin?
    [CHOOSE 2 ANSWERS]
  • A. Chitin binds strongly to certain heavy metals.
  • B. Insects need chitin in order to digest the fungi they eat.
  • C. Chitin can be added to soil to create a good habitat for fungi.
  • D. The cell walls of fungi, like the exoskeletons of insects, contain chitin.

 

  1. What do adsorption and absorption in fungi have in common?
  • A. They both can help the production of new filaments.
  • B. They both can increase the production of chitin.
  • C. They both can help keep pollutants out of groundwater.
  • D. They both result in the strengthening of cell walls.

 

  1. Why does the professor mention the antibiotic penicillin?
  • A. To suggest that more fungi should be investigated as potential sources of medications
  • B. To point out that certain heavy metals are needed for the production of penicillin
  • C. To criticize the pharmaceutical industry for contributing to environmental pollution
  • D. To show how a waste product from one process can be useful in another process

 

  1. Why does the professor say this: 🎧
  • A. She does not have time to fully explain the reason.
  • B. She is hopeful that students will be able to figure out the reason.
  • C. She wonders why mushrooms are not already used for cleaning up pollution.
  • D. She realizes that the research she has been discussing is still in its early stages.



答案:
D B AD C D C


发表评论

电子邮件地址不会被公开。 必填项已用*标注