Question:
Disaccharide found in cellulose is:
Disaccharide found in cellulose is:
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Humans cannot digest cellulose because we lack the enzyme cellulase, which is required to break the \(\beta(1 \to 4)\) linkage found in Cellobiose.
Updated On: Jul 4, 2026
- Maltose
- Cellobiose
- Lactose
- Sucrose
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The Correct Option is B
Solution and Explanation
Concept:
Polysaccharides like cellulose are made of repeating disaccharide units.
• Starch is made of repeating Maltose units.
• Cellulose is a linear chain of glucose molecules.
Step 1: Examining the linkage in cellulose.
Cellulose consists of glucose units linked by \(\beta(1 \to 4)\) glycosidic bonds. Every alternate glucose unit is rotated 180 degrees.
Step 2: Identifying the repeating unit.
The fundamental repeating disaccharide unit is Cellobiose. Cellobiose is composed of two glucose molecules.
Step 3: Distinguishing from Maltose.
Maltose has \(\alpha(1 \to 4)\) linkages. Cellobiose has \(\beta(1 \to 4)\) linkages. Final Answer: (B)
• Starch is made of repeating Maltose units.
• Cellulose is a linear chain of glucose molecules.
Step 1: Examining the linkage in cellulose.
Cellulose consists of glucose units linked by \(\beta(1 \to 4)\) glycosidic bonds. Every alternate glucose unit is rotated 180 degrees.
Step 2: Identifying the repeating unit.
The fundamental repeating disaccharide unit is Cellobiose. Cellobiose is composed of two glucose molecules.
Step 3: Distinguishing from Maltose.
Maltose has \(\alpha(1 \to 4)\) linkages. Cellobiose has \(\beta(1 \to 4)\) linkages. Final Answer: (B)
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