Question

Hexose sugar is

• A. Mannose
• B. Galactose
• C. Both A and B
• D. Cellulose

Answer 1

Answer: (C)

Both A and B

Hexose sugar is a monosaccharide with six carbon atoms. They have a chemical formula as C${}_6$H${}_{12}$O${}_6$. Hexoses are classified on the basis of functional group, with aldohexoses having an aldehyde at position 1 and ketohexoses having a ketone at position 2. For example, glucose, mannose, galactose etc.
The structure of mannose is as shown in the figure.