試題詳解

27. Please choose the correct answer from the following descriptions:

1. Number of hydrogen bonds per water molecule in ice is higher than that in water.

2. 0.1 g   glycogen   in 100 mL water results in lower osmolarity than 0.1 g   glucose   in 100 mL water.

3. Every turn of α-helix is 5.4 Å in length. 

4. The strength of α-keratin depends on its Cys content.

5. Hydrogen bond in α-helix formed between residue i and i+3.
(A) 1 and 3 are incorrect.
(B) 2 and 5 are incorrect.
(C) Only 1, 2 and 4 are correct.
(D) Only 2 is incorrect.
(E) Only 5 is incorrect.