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Viral spikes ________.


A) are present on all viruses
B) protrude from the envelope
C) block attachment between virus and host
D) are derived from host proteins
E) All of the choices are correct

F) C) and D)
G) None of the above

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Visible, clear, well-defined patches in a monolayer of virus-infected cells in a culture are called ________.


A) lysogeny
B) budding
C) plaques
D) cytopathic effects
E) pocks

F) B) and C)
G) D) and E)

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The envelope of enveloped viruses ________.


A) is identical to the host plasma membrane
B) is only composed of host endomembrane
C) does not contain spikes
D) is obtained by viral budding or exocytosis
E) None of the choices are correct

F) C) and E)
G) A) and B)

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Which of the following is a type of cytopathic effect?


A) Inclusions in the nucleus
B) Multinucleated giant cells
C) Inclusions in the cytoplasm
D) Cells change shape
E) All of the choices are correct.

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

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Persistent viruses that can reactivate periodically are ________.


A) chronic latent viruses
B) oncoviruses
C) syncytia
D) inclusion bodies
E) cytopathic

F) A) and D)
G) A) and C)

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Creutzfeldt-Jakob disease is ________.


A) caused by a chronic latent virus
B) initiated by an oncogenic virus
C) caused by a viroid
D) a spongiform encephalopathy of humans
E) also called "mad cow disease"

F) A) and D)
G) C) and E)

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Spikes are glycoproteins of the virus capsid.

A) True
B) False

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A naked virus has only a(n) ________.


A) capsid
B) capsomere
C) nucleocapsid
D) envelope
E) antigenic surface

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

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An ideal antiviral drug would be one that ________.


A) disrupted an integral viral process while causing little damage to the host cell
B) killed the host cell thereby depriving the virus of its means to translate proteins
C) killed both the virus and the host cell
D) prevents translation by the host cell ribosome, depriving the virus of a means to replicate

E) C) and D)
F) A) and B)

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