A saccharide that has free aldehyde group is called a(n)_____________.

Question

Quizplus · Accepted Answer

A saccharide with a free aldehyde group is capable of undergoing a redox reaction, and therefore is called a reducing sugar. Ketoses, like aldoses, have a carbonyl group, but it is a ketone rather than an aldehyde, so they are not reducing sugars. Aldohexose is a type of reducing sugar, but it only refers to a specific class of six-carbon sugars. An alditol is a sugar alcohol, which is formed from the reduction of a carbonyl group, but it does not have a free aldehyde group and is not a reducing sugar. Therefore, the correct answer is C - reducing sugar.

A Saccharide That Has Free Aldehyde Group Is Called A(n)_____________