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Virus And Bacteria Quiz 33 (25 MCQs)

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1. When a virus infects a host, it first attaches to the host cell, injects its genetic material, then
2. The tryptophan operon is
3. What important role do bacteria called decomposers play?
4. An organism that is photosynthetic but needs organic compounds as a carbon source
5. Some fungi secrete substances that are toxic to bacteria that compete with them for food. Scientists have used their knowledge of this ability of fungi in order to produce which of the following substances?
6. Which one of the following is a viral disease transmitted to man by the bite rabid animals particularly dogs?
7. Chicken pox, SARS, Ebola, and AIDS are all types of
8. Parvo is a virus that affects _____
9. Spherical prokaryote
10. What is the purpose of a dichotomous key?
11. HIV infects _____
12. A vaccines main goal is to:
13. Viruses are considered to be nonliving because they
14. A protein that can attach to a pathogen and make it useless is _____
15. Producers such as grass and trees _____
16. Viruses are not considered to be living things, what do suppose led scientists to this conclusion.
17. Outer shell of a virus that protects the genetic material
18. The protein coat of a virus is known as the _____
19. Bacteria are eukaryotic. This means that they have cell parts which _____
20. A virus needs a/an _____ to reproduce.
21. Which of the following is NOT a rule to writing scientific names?
22. What process results in genetically different bacteria?
23. Which of the following is NOT a disease caused by bacteria?
24. Contains a cell wall and extensions for attachment called pili
25. A close relationship between two organisms is called a(an)
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