試題詳解

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

1. Protein sectors are evolutionary units of three-dimensional structure.

2. The α-D-glucose and β-D-glucose interconvert in aqueous solution. 

3. Lectin is the exoskeleton of insects.

4. β-Keratin is Gly and Pro rich.

5. The pl of histidine is around 6.
(A) 1 and 2 are correct.
(B) 1, 3 and 4 are correct.
(C) 1 and 5 are correct.
(D) 2, 3 and 4 are correct.
(E) Only 4 and 5 are incorrect.