Exams › NEET › Biology

The two functional groups characteristic of sugars are

1. Hydroxyl and methyl
2. Carbonyl and methyl
3. Carbonyl and hydroxyl
4. Carbonyl and phosphate

Correct answer: Carbonyl and hydroxyl

Solution

Sugars (carbohydrates) characteristically contain a carbonyl group (aldehyde or ketone) and several hydroxyl groups. This combination is what distinguishes them from options containing methyl or phosphate groups.

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