alleryStart learning →What is adenosine triphosphate made of?
AAdenosine bound to three phosphate groups
BAdenine bound to three ribose sugar rings
CRibose bound to three nitrogenous bases
DGlycerol bound to three phosphate groups
Answer & Solution
Correct answer: A. Adenosine bound to three phosphate groups
1. As its name suggests, adenosine triphosphate is comprised of adenosine bound to three phosphate groups.
2. Adenosine itself is a nucleoside consisting of the nitrogenous base adenine and a five-carbon sugar, ribose.
3. So the molecule holds one adenine, one ribose and three phosphates, not three sugars or three bases.
4. Glycerol belongs to phospholipids and has no place in ATP.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 6 "Metabolism", section 6.4 ATP: Adenosine Triphosphate_
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