Type of sugar in DNA?

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Multiple Choice

Type of sugar in DNA?

Explanation:
DNA uses a five-carbon sugar called 2'-deoxyribose, which has no oxygen at the 2' position. That missing hydroxyl group is what gives DNA greater chemical stability, helping it store genetic information for long periods and survive through replication. In nucleotides, this sugar links to a phosphate and to a nitrogenous base, forming the sugar–phosphate backbone that holds the DNA strands together. If you compare to RNA, the sugar is ribose, which has a hydroxyl at the 2' position. That small difference makes RNA more reactive and less chemically stable. The other sugars listed aren’t used in DNA: glucose and mannose are hexoses involved in metabolism, while ribose is the sugar used in RNA.

DNA uses a five-carbon sugar called 2'-deoxyribose, which has no oxygen at the 2' position. That missing hydroxyl group is what gives DNA greater chemical stability, helping it store genetic information for long periods and survive through replication. In nucleotides, this sugar links to a phosphate and to a nitrogenous base, forming the sugar–phosphate backbone that holds the DNA strands together.

If you compare to RNA, the sugar is ribose, which has a hydroxyl at the 2' position. That small difference makes RNA more reactive and less chemically stable. The other sugars listed aren’t used in DNA: glucose and mannose are hexoses involved in metabolism, while ribose is the sugar used in RNA.

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