_ is/are a non-reducing sugar.
Correct answer: B. Sucrose
- A. Glucose and fructose
- B. Sucrose
- C. Fructose and maltose
- D. Galactose
Explanation
A reducing sugar must have a free hemiacetal group. In sucrose, the anomeric carbons of both the glucose and fructose units are involved in the glycosidic bond, so there is no free hemiacetal. Therefore, sucrose is a non-reducing sugar.
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