Proteins are made up of(A) folded irregularly (B)chains, the links(C) of which(D) are amino acids.

Câu hỏi :

Proteins are made up of(A) folded irregularly (B)chains, the links(C) of which(D) are amino acids.

A made up of

B folded irregularly 

C the links

D which(

* Đáp án

B

* Hướng dẫn giải

Phương pháp giải:

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