Question

How does an aldose differ from a ketose?

Short answer

An aldose differs from a ketose on the basis of the functional group present in their carbon skeleton.

Step-by-step solution

Introduction of monosaccharides

The simple sugars that are the most basic units of carbohydrates are known as monosaccharides. These are generally water-soluble, crystalline in structure and colorless.

Differentiation between aldose and ketose

Aldoses are monosaccharides with aldehyde as a carbonyl group in their structure: glucose, ribose, and galactose.

In contrast, ketose is a monosaccharide, whereas the carbonyl group is a ketone. Example: fructose and ribulose.