Indigestible carbohydrate, which is also a constituent of our diet, is _________.
A
Cellulose
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B
Galactose
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C
Maltose
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D
Starch
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Solution
The correct option is A Cellulose Cellulose is a polysaccharide of glucose linked together by a beta- (1-4) linkage. Only microorganisms have the capacity to break down this glycosidic bond. No animal have the enzymes to break down cellulose. Although, humans can easily digest starch and glycogen that are formed by alpha (1-4)- and alpha (1-4)- glycosidic bonds between glucose monomers. Some mammals such as ruminants do have bacteria in their gut that can produce cellulase enzyme which breaks down cellulose, enabling them to digest cellulose.