The functional groups characteristic of sugars are:

Carbonyl and phosphate

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Carbonyl and methyl

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Hydroxyl and methyl

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Carbonyl and hydroxyl

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Solution

The correct option is D Carbonyl and hydroxyl

Carbohydrates or sugars are organic compounds that are made of hydrogen, carbon, and oxygen. Carbonyl and hydroxyl groups are the functional groups found in sugars.

A carbonyl group is a chemically organic functional group composed of a carbon atom double-bonded to an oxygen atom [C=O].

A hydroxyl group is a functional group consisting of a hydrogen atom covalently bonded to an oxygen atom.

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