Although amino acids may have other formulas, those in protein invariably have the general formula RCH(NH2)COOH, where C is carbon, H is hydrogen, N is nitrogen, O is oxygen, and R is a group, varying in composition and structure, called a side chain.
no, the scope on it blocks out natural light
Answer:
The areas that have had the action potential are refractory to a new action potential.
Explanation:
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