7. The difference between serine and homoserine is the same as between cysteine and homocysteine. This change from the common amino acid is:
(A)one additional -CH2- group.
(B) one additional -COOH group.
(C)two additional -NH2 groups.
(D) presence of a ring system.
(E)one additional -NH2 group.
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這是一個關於生物化學中胺基酸結構與命名規...
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The difference betwe...
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