Biology
Grade-7
Easy
Question
Which of the following is indigestible to humans?
- Cellulose
- Starch
- Glycogen
- Fat
Hint:
The type of polysaccharide present in the plant cell walls.
The correct answer is: Cellulose
- Polysaccharides contain multiple units of monosaccharides or disaccharides linked together by glycoside bonds
- Cellulose, starch, and glycogen are a few examples of polysaccharides
- Cellulose contains repeated units of glucose found in the cell wall of plants
- Cellulose can be digested by an enzyme called cellulase
- Humans lack cellulase enzyme and cannot be digested
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