STAAR Biology Category 1 Review

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What is a lysogenic infection?

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A lysogenic infection is a type of viral infection where the virus integrates its genetic material into the host's DNA and can remain dormant for long periods without causing immediate harm.

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How does a lysogenic infection differ from a lytic infection?

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A lysogenic virus can remain in the host DNA for a longer period without becoming active, while a lytic virus immediately directs the production of new viruses and causes cell lysis.

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What is active transport?

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Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy (ATP).

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Define diffusion.

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Diffusion is the passive movement of molecules from an area of higher concentration to an area of lower concentration until equilibrium is reached.

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What is osmosis?

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Osmosis is the diffusion of water molecules through a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

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What is facilitated diffusion?

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Facilitated diffusion is the process of passive transport of molecules across a cell membrane via specific transmembrane integral proteins.

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What is the role of DNA in a lysogenic infection?

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In a lysogenic infection, the viral DNA integrates into the host's DNA, allowing it to replicate along with the host's genetic material without causing immediate harm.

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What is the difference between RNA and DNA viruses?

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RNA viruses contain ribonucleic acid (RNA) as their genetic material, while DNA viruses contain deoxyribonucleic acid (DNA).

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What is cell lysis?

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Cell lysis is the breaking down of the cell membrane, leading to the release of the cell's contents, often caused by viral infections.

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What is a virus?

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A virus is a microscopic infectious agent that can only replicate inside the living cells of an organism.