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Drawing of viruses attacking a cell

Viruses are essentially DNA or RNA surrounded by a coat of protein – they are not considered living. Why is this?

While viruses aren't considered alive, they still have genetic material and can evolve. Why might the classification of viruses be controversial?

Viruses infect a variety of organisms and need a host cell to replicate. Once inside the host cell, how does a virus infect a cell? How are viruses produced?

Viruses can cause many human diseases, whether they're as common as the flu or the common cold or as fatal as rabies and AIDS, or acquired immune deficiency syndrome.

To check your answers and find more information on viruses, click here and here!

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