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 structureds d:m7 xg:3ov of a protein is a result of which of the followin5 ipu0pjq2h7k;d:ra t9v+ xae g:
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 secrkg z4ja,0j,la. ax do- 6096n hxepblnm1td5ondary structure of a protein is the result of hydrogen bonding between the amide hydrogens and the carbonyl o6o ja xpzaae6d1jng,k0- 0 4,9xm5tdlnl.bhrxygens of the peptide backbone. Choices B, C and D are incorrect, as covalent bonding and ionic bonding do not influence the secondary structure of proteins.
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