Question

What are the three distinct components of a nucleotide?​

Answer 1

The components of a nucleotide are: a sugar, nitrogen-containing base and a phosphate group.

• DNA and RNA are made from nucleotides.
• A nucleotide is made from a sugar (deoxyribose for DNA and ribose for RNA), a phosphate group and a nitrogenous base.
• The nitrogenous bases that are present in DNA are adenine (A), cytosine (C), guanine (G) and thymine (T).
• RNA has the same bases but Thymine base is replaced with Uracil (U) in it.
• The nucleotides join to form polymers which make up the DNA and RNA.

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Answer 2

A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base. The bases used in DNA are adenine (A), cytosine (C), guanine (G) and thymine (T).

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