本题目来源于试卷: Form and Function B.2 Proteins，类别为 IB生物学
[单选题]
Which of the following is a distingu5w - kz2cy7q eg1t;ocwm 9lry3dsf1m223 npzyish ;nx,4nswr(cking characteristic of the quaternary structure of a prote,4;rnnskw cx(in?
A. The amino acid chain is arranged into an alpha helix
B. The amino acid chain is arranged into beta-pleated sheets
C. Polypeptide chains are held together by R-group interactions
D. The amino acid sequence of the protein is held together by peptide bonds
参考答案: C
本题详细解析:
The quaternary structure of a protein can relate to the number of amino acid chains which make up the protein. These chains are held together by R-group interactions (Choice C). Choices A and B relate to the secondary structure of a protein. Choice D refers to the primary structure of a protein.
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