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Viruses


A) cannot be seen in a light microscope.
B) are prokaryotic.
C) contain 70S ribosomes.
D) undergo binary fission.

E) None of the above
F) B) and D)

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You are working in a laboratory that is studying a newly isolated virus.Your job is to culture the virus using in vitro methods.Upon observing your inoculated tissue culture specimen one day,you notice clumps of cells growing on top of the original monolayer of cells.Microscopic analysis of stained cells from the culture reveal an alteration in host cell membrane protein content and chromosomal structure.Based upon this information,you hypothesize that the virus you are studying is:


A) a bacteriophage
B) a prion
C) a viroid
D) an oncovirus
E) a satellite virus

F) A) and B)
G) All of the above

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New,nonenveloped virus release occurs by


A) lysis.
B) budding.
C) exocytosis.
D) both lysis and budding.
E) both budding and exocytosis.

F) All of the above
G) D) and E)

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Viruses attach to their hosts via


A) host glycoproteins.
B) host phospholipids.
C) viral phospholipids.
D) viral flagella.
E) carbohydrate attachments of the viral capsid.

F) All of the above
G) B) and D)

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Viruses are the most common cause of acute infections that do not result in hospitalization.

A) True
B) False

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