The nurse teaches a client with genital herpes that a virus is known as an intracellular parasite because:
1. it is surrounded by a protein coat called a capsid.
2. it affects only one species of living organism.
3. it contains DNA or RNA, but not necessarily both.
4. it is incapable of causing infection unless it has invaded a host cell.
Correct Answer: 4
Rationale 1: This is true, but it does not explain why a virus is called an intracellular parasite.
Rationale 2: Most viruses affect only one species of living organism, but this is not why a virus is known as an intracellular parasite.
Rationale 3: This is true, but it does not explain why a virus is called an intracellular parasite.
Rationale 4: Viruses must be inside a host cell to cause infection. They do not have the cellular equipment necessary for self-survival.
Global Rationale: Viruses must be inside a host cell to cause infection. They do not have the cellular equipment necessary for self-survival. Viruses are surrounded by a protein coat called a capsid, typically affect only one species of living organism, and have DNA or RNA, but not necessarily both. These facts do not explain why viruses are called intracellular parasites.
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