Respuesta :

1.they can’t reproduce on their own 2. They need to infect or invade a host cell 3. they don’t respond to anything

Answer:

All viruses contain nucleic acid, either DNA or RNA (but not both), and a protein coat, which encases the nucleic acid. Some viruses are also enclosed by an envelope of fat and protein molecules. In its infective form, outside the cell, a virus particle is called a virion.

Explanation:

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