Which statement accurately describes amino acids?

?A.   There are twenty varieties, with each type having a different R group. ?B.   There are twenty varieties, with each type having a different C-terminal end. ?C.   There are over 200 varieties, with each type having a different R group. ?D.   There are over 200 varieties, with each type having a different C-terminal end.


A

Anatomy & Physiology

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