Why do viruses need cells?

Question:

Why do viruses need cells?

Virus Survival

All viruses need a host cell to complete their life cycle.

Some viruses, however, aren't even able to survive outside of the body. HIV, for example, dies very quickly on dry surfaces. Others, such as influenza virus, can survive on surfaces for weeks.

Answer and Explanation:

Viruses are obligate parasites, meaning they cannot live without taking advantage of another living organism. Specifically, viruses need cells to...

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The Life Cycle of a Virus: How Viruses Live, Attack & Replicate

from Biology 103: Microbiology

Chapter 4 / Lesson 3
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