Which of these is atp?
a molecule consisting of two phosphate groups, ribose, and adenine.
a molecule consisting of three phosphate groups, ribose, and adenine.
a molecule consisting of three phosphate groups, deoxyribose, and adenine.
a molecule consisting of three phosphate groups, ribose, and thymine.
a molecule consisting of three phosphate groups, deoxyribose, and guanine.

The correct answer is A molecule consisting of three phosphate groups, ribose, and adenine.

Explanation:

ATP means adenosine triphosphate, and it is a molecule which has a very important role in energy transfer in the cells.  As its name says, it is composed by:

- adenine: a purine base, which is also a component of nucleic acids.

- ribose: a 5-carbon sugar (in contrast to deoxyribose, ribose has a -OH group in place of a -H group in carbon 2)

- three phosphate groups

Notice that adenine bonded to the ribose is called adenosine.

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