The two monosaccharides shown below could BEST be described as:
A) ketoses.
B) anomers.
C) rotamers.
D) epimers.
E) enantiomers.

Question

The two monosaccharides shown below could BEST be described as: 
A) ketoses. 
B) anomers. 
C) rotamers. 
D) epimers. 
E) enantiomers.

Quizplus · Accepted Answer

These two monosaccharides differ only in their stereochemistry around a single carbon (C-2). They are therefore considered epimers, which are monosaccharides that differ in the stereochemistry at any carbon other than the anomeric carbon (C-1)

The Two Monosaccharides Shown Below Could BEST Be Described As