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In man cellulose is digested in...

In man cellulose is digested in

A

The caecum

B

The colon

C

The appendix

D

Not digested at all

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### Step-by-Step Solution: 1. **Understanding Cellulose**: - Cellulose is a complex carbohydrate, specifically a polysaccharide, composed of β-glucose monomer units. It is a major component of plant cell walls. 2. **Enzyme Requirement for Digestion**: - To digest cellulose, an enzyme called cellulase is required. This enzyme breaks down the β-glucose bonds in cellulose. 3. **Human Digestive System**: - In humans, the digestive system lacks the enzyme cellulase. This means that humans are unable to break down cellulose into simpler sugars. 4. **Consequences of Lack of Digestion**: - Since cellulose cannot be digested, it passes through the human digestive tract undigested. It is often referred to as dietary fiber or roughage. 5. **Conclusion**: - Therefore, in humans, cellulose is not digested at all. The correct answer to the question is that cellulose is not digested in the human body. ### Final Answer: Cellulose is not digested at all in humans. ---

### Step-by-Step Solution: 1. **Understanding Cellulose**: - Cellulose is a complex carbohydrate, specifically a polysaccharide, composed of β-glucose monomer units. It is a major component of plant cell walls. 2. **Enzyme Requirement for Digestion**: - To digest cellulose, an enzyme called cellulase is required. This enzyme breaks down the β-glucose bonds in cellulose. ...
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