Question

#10 identify the reducing end:

10. Identify the reducing end: CH2OH CH2OH B) C) A) -0 Кондон — D) OKOH OH HNL OH E) none of нон нон these 11. Which of the following is a structural property of starch? A) B-1,4 linkage B) 0-6,12 linkage C) a-1,4 linkage D) ribose E) none of these 12. In the structures below, R, and R2 are hydrocarbon chains each containing 15 carbons and 31 hydrogens. Which is the correct structure for dipalmitoyl phosphatidylcholine? R 0 ROH

please explain thoroughly. I know D id the answer but don't know why.

Answer 1

Yes correct answer is D because it contains the free anomeric carbon. The ring can close in two different ways with the OH group up or down in the conventional Haworth projection. This carbon atom having this configuration is known as the anomeric carbon.