6. Molecules of a given protein have all EXCEPT:
(A) a fixed amino acid composition,
(B) a defined amino acid sequence,
(C) an invariant molecular weight,
(D) a nucleotide sequence from which they are encoded,
(E) a sequence read from C-terminal end to N-terminal end.

1. 題目解析這道考題考察的是對蛋白質...