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 structure of a proteint( 9 90jus(ssrcyr0pu is a result of which of tg kmj2vlvel0kgt:y- + s)fzc.c8l/ iq-x 6pv)he 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 the secondary structure of a protein is the re6j (sn u)7eqtxj3n)h p c;-muzsult of hydrogen bonding between the amide hydrogens and the carbonyl oxygens of the peptide backbone. Choices B, C and D are incorrj u 7n)q sjuecm-(zh;xpn)63t ect, as covalent bonding and ionic bonding do not influence the secondary structure of proteins.
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