Multiple Choice
In living organisms, what is the primary function of ATP (adenosine triphosphate)?
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1. Introduction to Biochemistry
Gibbs Free Energy
Multiple Choice
In the context of Gibbs free energy and ATP hydrolysis, how many phosphate groups does adenosine triphosphate (ATP) contain?
A
One phosphate group
B
Four phosphate groups
C
Three phosphate groups
D
Two phosphate groups
Verified step by step guidance1
Recall the structure of adenosine triphosphate (ATP), which consists of an adenosine molecule attached to a chain of phosphate groups.
Understand that the term 'triphosphate' in ATP indicates the number of phosphate groups present; 'tri-' means three.
Visualize or recall that ATP has three phosphate groups linked together by high-energy bonds, which are key to its role in energy transfer.
Recognize that during ATP hydrolysis, one phosphate group is typically removed, releasing energy and converting ATP to ADP (adenosine diphosphate).
Conclude that ATP contains three phosphate groups based on its name and chemical structure.
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