Question:

Sucrose is a disaccharide of which of the following?

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Remember the monosaccharide components of common disaccharides like sucrose, lactose, and maltose.
Updated On: Mar 15, 2025
  • I, III
  • I, II
  • II, III
  • II, IV
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The Correct Option is B

Solution and Explanation

1. Identify the monosaccharide components of sucrose:

Sucrose is a disaccharide made up of glucose and fructose.

2. Identify the structures:

Structure I represents \( \alpha \)-D-glucose.
Structure II represents \( \beta \)-D-fructose.
Structure III represents \( \beta \)-D-glucose.
Structure IV represents \( \alpha \)-D-fructose.

3. Determine the linkage:

In sucrose, \( \alpha \)-D-glucose and \( \beta \)-D-fructose are linked through a glycosidic linkage between C1 of glucose and C2 of fructose.

Therefore, sucrose is a disaccharide of \( \alpha \)-D-glucose (I) and \( \beta \)-D-fructose (II).

Final Answer:
I, II.
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