Virology Flashcards

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viroid

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single-stranded RNA molecule that has no surrounding capsids

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prion

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protein particles that cause disease

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capsid

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Outer protein coat of a virus

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vaccine

Back

substance prepared from killed or weakened pathogens and introduced into a body to produce immunity

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reverse transcriptase

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An enzyme encoded by some certain viruses (retroviruses) that uses RNA as a template for DNA synthesis.

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Retrovirus

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An RNA virus that reproduces by transcribing its RNA into DNA and then inserting the DNA into a cellular chromosome; an important class of cancer-causing viruses.

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envelope

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a membranelike layer that covers the capsids of some viruses

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attenuated virus

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a weakened form of the virus that cannot cause disease

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virulent virus

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a virus that lyses or kills the host cell after infection

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-viridae

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suffix for the family name of a virus