Which component is NOT part of ATP?

Adenosine triphosphate (ATP) is a crucial molecule that serves as the primary energy carrier in living cells. Structurally, ATP is made up of three main components: ribose, adenine, and three phosphate groups.

Ribose is a five-carbon sugar that forms the backbone of the ATP molecule. Adenine is one of the four nitrogenous bases found in nucleotides and is attached to ribose. The three phosphate groups are linked together and are key to ATP's role in energy transfer.

Glucose, on the other hand, is a simple sugar that serves as an energy source but is not a structural component of ATP. ATP is synthesized from glucose during cellular respiration, but glucose does not contribute to the structure of ATP itself. Thus, identifying glucose as not being part of ATP is accurate, as it does not belong to the fundamental components that form ATP.