Viruses Use the Host Cell's Machinery to Make Copies of Themselves

question 17

Multiple Choice

Viruses use the host cell's machinery to make copies of themselves. However, some human viruses require a type of replication that humans do not normally have. For example, humans normally do not have the ability to convert RNA into DNA. How can these types of viruses infect humans, when human cells cannot perform a particular role that the virus requires?

• A) The virus causes mutations in the human cells, resulting in the formation of new enzymes that are capable of performing these roles.
• B) The viral genome codes for specialised enzymes not found in the host cells.
• C) The virus infects only those cells and species that can perform all the replication roles necessary.
• D) Viruses can stay in a quiescent state until the host cell evolves this ability.

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Definitions:

Informal Outlines

A loosely structured guide for organizing thoughts and arguments before writing, often bulleted or noted in brief phrases.

Cornell System

A systematic method of note-taking involving the division of a page into three sections: cues, notes, and summary, to organize and review notes efficiently.

Note Taking

A method of creating order and arranging thoughts and materials to help a person retain information.

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A manner of speaking in which the pitch does not vary, often leading to a dull or unvaried delivery.