阿摩線上測驗
20. In the α helix the hydrogen bonds:
(A) are roughly parallel to the axis of the helix.
(B) are roughly perpendicular to the axis of the helix.
(C) occur mainly between electronegative atoms of the R groups.
(D) occur only between some of the amino acids of the helix.
(E) occur only near the amino and carboxyl termini of the helix.
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統計： A(0), B(0), C(0), D(0), E(1) #3388105
統計： A(0), B(0), C(0), D(0), E(1) #3388105
