An agent that reproduces in cells but is not composed of cells and contains RNA as its genetic material is a(n) _____.Group of answer choices

The agent described in your question is a "virus."

Explanation

1. Definition of a Virus: A virus is a microscopic infectious agent that can only replicate inside the living cells of an organism. Unlike bacteria or other cellular life forms, viruses are not composed of cells; instead, they consist of genetic material (either DNA or RNA) encased in a protein coat called a capsid.

2. Characteristics of RNA Viruses: Specifically, RNA viruses are those that have RNA as their genetic material. They use the host's cellular machinery to translate their RNA into proteins necessary for replication and assembly of new virus particles.

3. Reproduction Process: The process begins when the virus attaches to a host cell and injects its RNA into it. The host cell then utilizes the viral RNA to produce new viral components, which are assembled and released, often destroying the host cell in the process.

In summary, due to its non-cellular structure and RNA as genetic material, the correct answer to your question is "virus."