Multiple Choice
In the context of Gibbs free energy, what happens when a terminal phosphate group is removed from ATP by hydrolysis?
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1. Introduction to Biochemistry
Gibbs Free Energy
Multiple Choice
In biochemistry, how many phosphate groups does adenosine triphosphate (ATP) possess?
A
Two phosphate groups
B
Four phosphate groups
C
Three phosphate groups
D
One phosphate group
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 presence of three phosphate groups linked together.
Visualize or draw the ATP molecule, noting the adenosine part (adenine base + ribose sugar) and the three phosphate groups connected in a linear chain.
Recognize that these three phosphate groups are key to ATP's role in energy transfer, as breaking the bonds between them releases energy.
Conclude that ATP contains three phosphate groups based on its name and molecular structure.
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