Multiple Choice
In the context of Gibbs free energy and ATP hydrolysis, how many phosphate groups does adenosine triphosphate (ATP) contain?
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1. Introduction to Biochemistry
Gibbs Free Energy
Multiple Choice
In the context of Gibbs free energy and cellular energetics, ATP (adenosine triphosphate) contains how many phosphate groups?
A
4 phosphate groups
B
2 phosphate groups
C
3 phosphate groups
D
1 phosphate group
Verified step by step guidance1
Recall the molecular structure of ATP (adenosine triphosphate). ATP consists of an adenosine molecule attached to a chain of phosphate groups.
Identify the number of phosphate groups in ATP by examining the name: 'triphosphate' indicates the presence of three phosphate groups.
Understand that these phosphate groups are linked together by high-energy bonds, which are important for cellular energetics and the release of energy during hydrolysis.
Confirm that ATP contains exactly three phosphate groups, which distinguishes it from ADP (adenosine diphosphate) with two phosphate groups and AMP (adenosine monophosphate) with one phosphate group.
Summarize that the correct number of phosphate groups in ATP is three, which is fundamental to its role as the primary energy currency in cells.
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