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Viruses

Viruses
Which of the following bacteriophage is said to have banal symmetry?

T6
T2
all of these
T4

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Viruses
Which of the following is not true of virions?

Contain RNA
Reproduce independently
Contain DNA
Are extracellular

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Viruses
Plant viruses may be cultivated in

tissue culture
cultures of separated cells
whole plants
all of these

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Viruses
Which of the following viruses has not been associated with human cancer?

Hepatitis C virus
Herpes simplex virus type 2
Varicella-Zoster virus
Hepatitis B virus

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Viruses
The temperate phage that have no site specificity for insertion and may even be able to insert multiple copies of their DNA into a single bacterial chromosome is

Phage Mu
λ phage enzyme
λ DNA
Phage Mn

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Viruses
A change from lysogeny to lysis is generally induced by

ultraviolet light
all of these
irradiation
chemicals

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