Multiple choice

A virus consists of a

  1. protein coat and nucleic acid molecules

  2. cell membrane and chromosome

  3. protein coat, genes, and mitochondria

  4. lipid coat (the capsid), genes, and ribosomes

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A virus consists of a single- or double-stranded nucleic acid and at least one protein surrounded by a protein shell, called a capsid; some viruses also have an outer envelope composed of fatty materials (lipids) and proteins.