Question
Chemistry Question on Biomolecules
The following carbohydrate is
A
a ketohexose
B
an aldohexose
C
an α-furanose
D
an α-pyranose
Answer
an aldohexose
Explanation
Solution
As the carbohydrate has six carbons, it is a hexose. Also, it has hydrogen at anomeric carbon (first carbon).
- Anomeric C is the new chiral centre that is formed after cyclization.
- It is the cyclic form of D-glucose.
- As glucose has aldehyde functionality, the structure is aldohexose.