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BIOS 242 Week 3 Quiz. Questions and Answers.

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BIOS 242 Week 3 Quiz: Summer 2021 1. Question: An organism that uses CO2 for its carbon needs and sunlight for its energy needs would be called a 2. Question: An obligate saprobe differs from a parasite in that 3. Question: Cultures of a bacteria strain were incubated in a refrigerator (5oC),...

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  • May 18, 2022
  • 3
  • 2021/2022
  • Exam (elaborations)
  • Questions & answers
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Latest BIOS 242 Week 3 Quiz: Summer 2021

1.
Question: An organism that uses CO2 for its carbon needs and sunlight for its energy

needs would be called a .

a) photoautotroph


b) halotroph


c) saprobe


d) chemoheterotroph


e) heterotroph
2.
Question: An obligate saprobe differs from a parasite in that

A) a saprobe is a fungus, but a parasite can be any type of microbe.



B) a saprobe does not harm a host that it lives on, whereas a parasite does harm a host.



C) a saprobe cannot infect a human, but a parasite is always infectious.



D) a saprobe derive nutrients from dead plants and animals, but a parasite derives nutrients

from living plants and animals.



3.
Question: Cultures of a bacteria strain were incubated in a refrigerator (5 oC), on a lab bench

(22oC), in a 37oC incubator, and in a 50oC incubator. After incubation, there was no growth

at 37oC and 50oC, slight growth in the refrigerator, and abundant growth on the lab bench

top. Which term best describes this organism?

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