問題詳情

14. The chemical bond between ribose and phosphate of UMP is an ______.
(A) Ether
(B) Ester
(C) Amide
(D) Aldehyde
(E) Ketone.

參考答案

答案:B

統計:A:0,B:0,C:0,D:0,E:0

難度:計算中