Viruses and bacteria can infect human cells. Bacteria are living organisms, while viruses are not. How do you think the treatment for viral and bacterial illnesses differ? How do you think they affect healthy body cells?

Antibiotics, if prescribed and taken correctly, usually can kill bacteria but they are useless against viruses such as the cold and flu. Unlike bacteria, viruses generally require a vaccination to prevent them in the first place or antiviral drugs to treat them.

Explanation:

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answer; ///(b) it is composed of four protein chains and four heme groups;

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