- While structure varies among different viruses, they are all composed of an outer protein coat that encloses the genetic material. Some bacteria, such as the herpes simplex virus, have an outer membrane that encloses the protein coat.

- The lytic cycle of viral reproduction, seen to the left, begins when the virus infects the host cell and injects its genetic material. - Host cell enzymes are used to make copies of of viral nucleic acids and direct the synthesis of viral proteins. New viruses are assembled. The cell lyses, releasing the viruses

- During the lysogenic cycle the viral DNA is incorporated into the host cell’s chromosome. Every time that the host cell replicates, the viral material is also replicated. - The virus may eventually leave the host cell when a lytic cycle is triggered. Triggers include environmental influences such as chemicals or radiation.

Which statement regarding prions is true?

- Prions are thought to cause other proteins to change their shape.

The lysogenic cycle differs from the lytic cycle in which of the following ways?

- In the lytic cycle the cell lyses and releases copies of the virus.

11.14.1 Viruses and Prions: Living or Nonliving? Flashcards by Irina Soloshenko

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11.14.1 Viruses and Prions: Living or Nonliving? Flashcards

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