Question

Which term best describes a molecule of ATP?
A. a triphosphate
B. a phospholipid head
C. a phosphorylated DNA nucleotide
D. a modified RNA nucleotide
E. a glycosidic group

Answer 1

A modified RNA nucleotide is the best term that describes a molecule of ATP.

ATP is an organic molecule of the nucleotide type, it is composed of a molecule of adenine (nitrogen base) linked to a carbon atom of a molecule of ribose (pentose), a sugar that in turn has bonded three phosphate ions to another carbon atom.

• Structurally, ATP is a nucleotide of RNA, nucleotides are organic molecules composed of a covalent bond between a nucleoside and a phosphate group (PO43-).

• Nucleosides, on the other hand, are organic molecules composed of a pentose-type sugar and a nitrogenous base.

Therefore, we can conclude that ATP is called a nucleotide that is essential for cells to obtain energy.

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