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Viruses

Viruses
Which of the following are obligate intracellular parasites?

All of these
Viruses
Chlamydia
Rickettsia

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

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

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Viruses
Which of the following is not true of virions?

Contain DNA
Are extracellular
Reproduce independently
Contain RNA

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Viruses
The viral DNA of the temperate phage, instead of taking over the functions of the cell's genes, is incorporated into the host DNA and becomes a prophage in the bacterial chromosome, acting as a gene. This happens in

none of these
lytic phase
lysogeny
spontaneous induction

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Viruses
The repressor protein, since the cell is resistant to lysis from externally infecting phage, is also called

none of these
immunity repressor
immunity operon
operon repressor

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Viruses
Which of the following viruses belong/s to family caliciviridae?

Hepatitis B virus
Hepatitis D virus
Hepatitis E virus
All of these

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