本题目来源于试卷: Form and Function B.2 Proteins，类别为 IB生物学
[单选题]
The secondary structc1ub:6 f,t qu;)mbp l/ fhegm9ure of a protein is a result of w r0h i*fl/9w*bb++p6beuufx 6rb1 vui hich of the following:
I.
Hydrogen bonding
II.
Covalent bonding
III.
Ionic bonding
A. I only
B. I and II only
C. I and III only
D. I, II and II
参考答案: A
本题详细解析:
Choice A is correct, as thqi8h r s 8-:d 7i65jllei3ucfee secondary structure of a protein is the result of hydrogen bonding between the amide hydrogens and the carbonyl oxygens of the peptide backbone. Choices B, C and D are incorrect, as covalent bonding and ionic bl6ecr7i se-:i 35ul i dhf88qjonding do not influence the secondary structure of proteins.
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