ATP stands for adenosine triphosphate, meaning adenosine bound to:
ATwo phosphates
BThree phosphates
CFour phosphates
DFive phosphates
Answer & Solution
Correct answer: B. Three phosphates
1. The prefix tri- counts the phosphate groups.
2. Adenosine triphosphate is comprised of adenosine bound to three phosphate groups.
3. Adenosine itself is the base adenine joined to the five-carbon sugar ribose.
4. Removing one phosphate gives adenosine diphosphate, which carries two.
_Source: OpenStax Biology for AP(R) Courses (CC BY 4.0), Ch 6 'Metabolism', sections 6.1-6.5_
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