Cells destroy body cells infected by a virus or bacteria. killer t t memory t none of the above

killer T

Explanation:

helper T activates killer T cells which literally kill the virus or bacteria.  memory T are the subset of an infection.

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helper T

Explanation:

Helper T cells destroy body cells infected by a virus or bacteria.

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b is the correct answer

in a chemical reaction, the atoms and molecules produced by the reaction are called products. no new atoms are created, and no atoms are destroyed. in a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.