What is a nucleotide?

Understand the Problem

The question is asking for a definition of a nucleotide, which is a fundamental concept in molecular biology. A nucleotide is a building block of nucleic acids, such as DNA and RNA.

Answer

A nucleotide is the basic unit of DNA and RNA, made of a nitrogenous base, a sugar, and a phosphate group.

A nucleotide is the basic building block of nucleic acids like DNA and RNA. It is composed of three components: a nitrogenous base (adenine, thymine, guanine, or cytosine in DNA; adenine, uracil, guanine, or cytosine in RNA), a pentose sugar, and a phosphate group.

Answer for screen readers

A nucleotide is the basic building block of nucleic acids like DNA and RNA. It is composed of three components: a nitrogenous base (adenine, thymine, guanine, or cytosine in DNA; adenine, uracil, guanine, or cytosine in RNA), a pentose sugar, and a phosphate group.

More Information

Nucleotides play crucial roles in cellular functions, including energy transfer (as ATP) and as components of coenzymes.

Tips

Don't confuse nucleotides with nucleosides; nucleotides include a phosphate group, while nucleosides do not.

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