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Question

Select the correct option:
How many carbon atoms are generally used in composition of monosaccharides?


A
3 to 7
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B
1 to 5
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C
5 to 10
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D
5 to 15
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Solution

The correct option is A 3 to 7
Carbohydrates are also called saccharides because their basic components are sugars. Monosaccharides are those sugars or simple carbohydrate monomers which cannot be hydrolysed further into smaller components. They have a general formula of $$C_nH_{2n}O_n$$. Depending upon the number of carbon atoms, monosaccharides are of five types : trioses (having 3 carbon atoms, glyceraldehyde), tetroses (having four carbon atoms, e.g., erythrose), pentoses (having five carbon atoms, e.g, ribose), hexoses (having six carbon atoms, e.g.; glucose), heptoses (having seven carbon atoms, e.g., sedoheptulose).
So, the correct answer is '3 to 7'.

Biology

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