Tag: DNA

IGCSE NOTES : Biology - Structure of DNA and Water

zimsake Jul 16, 2021 0 405

A DNA molecule is made up of long chains of nucleotides, formed into two strands. A nucleotide is a 5-carbon sugar molecule joined to a phosphate group (–PO3) and an organic base. In DNA the sugar is deoxyribose and the organic base is either adenine (A), thymine (T), cytosine (C) or guanine (G).

Tag: DNA

IGCSE NOTES : Biology - Structure of DNA and Water

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