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Elena develop chicken pox when she was in kindergarten. Later in life, when her children developed chicken pox, she remained healthy even though she was exposed to countless virus particles each day. Explain why.

Respuesta :

faithelnoor

Explanation:

-infectious

-microscopic

-specific to their host

-can't reproduce on their own (this is why they are not considered alive)

-no organells or membranes. just a protein coat and genetic material

-3 basic shapes: helical , polyhedral , and comples

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