Microbes and Society: Chapter 4 Practice Quiz

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Chapter 4 Viruses: At the Threshold of Life

Please read each question and select your answer from the choices provided. You must complete all of the questions in order to view your results. At the end of each exam, you have the option to e-mail your results to your instructor. (Kris.. do you want me to turn on this option?)

1: The viruses in an attenuated vaccine:
	A: Have no genome
	B: Continue to replicate
	C: Are usually larger than bacteria
	D: Have been altered with chemicals

2: When a virus enters a cell but does not replicate immediately, the situation is called:
	A: Lysogeny
	B: Fermentation
	C: Symbiosis
	D: Synergism

3: The viral nucleocapsid is the combination of:
	A: Capsomere and genome
	B: Capsid and spikes
	C: Envelope and capsid
	D: Genome and capsid

4: The researcher Stanley Prusiner is associated with work on:
	A: Kuru
	B: Prions
	C: Viroids
	D: Bacteriophages

5: The oncogene theory refers to:
	A: How chemicals inactivate viruses when applied
	B: How viruses replicate in host cells
	C: Where viruses come from
	D: How viruses transform normal cells into tumor cells

6: All the following are useful in the treatment of viruses except:
	A: Acyclovir
	B: Interferon
	C: Penicillin
	D: Antibodies

7: The envelope of an enveloped virus is derived from:
	A: The mitochondrion of the cell
	B: The cell membrane
	C: The spikes of the cell
	D: The endoplasmic reticulum of the cell

8: In order for a virus to replicate:
	A: The capsid must enter the host cell cytoplasm
	B: The host cell must be undergoing mitosis
	C: The genome must be released in the cytoplasm
	D: The host cell must lack a cell membrane

9: Reverse transcriptase is a useful enzyme to have when:
	A: An RNA virus converts its RNA to DNA
	B: There are no host cells present
	C: Nutrients are scarce
	D: Spikes are forming in the new virus

10: The size of viruses is usually measured in:
	A: Micrometers
	B: Decimeters
	C: Nanometers
	D: Millimeters

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