DNA contains the sugar ______.

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Multiple Choice

DNA contains the sugar ______.

Explanation:
DNA uses deoxyribose as the sugar in its backbone. Deoxyribose is a five-carbon sugar that lacks an oxygen atom at the 2' position, giving DNA greater chemical stability for long-term genetic information storage. In contrast, RNA uses ribose, which has a hydroxyl group at the 2' position and is more reactive. The other sugars are glucose and galactose, which are six-carbon sugars mainly used in metabolism, not as the backbone sugar of DNA.

DNA uses deoxyribose as the sugar in its backbone. Deoxyribose is a five-carbon sugar that lacks an oxygen atom at the 2' position, giving DNA greater chemical stability for long-term genetic information storage. In contrast, RNA uses ribose, which has a hydroxyl group at the 2' position and is more reactive. The other sugars are glucose and galactose, which are six-carbon sugars mainly used in metabolism, not as the backbone sugar of DNA.

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