Viruses Are Acellular Entities Too Small to Be Seen with a Light

question 44

Multiple Choice

Viruses are acellular entities too small to be seen with a light microscope. They are composed of a nucleic acid and a few proteins. Viruses replicate themselves and display other properties of living organisms only when they have invaded living cells. Indeed, some viruses can be crystallized and stored in a container on a shelf for years, but they retain the capacity to invade cells and cause disease. Jacquelyn C. Black, Microbiology: Principles and Explorations

• A) Argument; conclusion: They are composed of a nucleic acid and a few proteins.
• B) Nonargument.
• C) Argument; conclusion: Viruses are acellular entities ... microscope.
• D) Argument; conclusion: Indeed, some viruses can be crystallized ... cause disease.
• E) Argument; conclusion: Viruses replicate themselves ... invaded living cells.