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Multiple Choice
How many phosphate groups are present in an ATP molecule?
A
Two
B
Three
C
One
D
Four
Verified step by step guidance
1
Understand the structure of ATP (adenosine triphosphate). ATP consists of an adenosine molecule bonded to three phosphate groups.
Recognize that the name 'triphosphate' in ATP indicates the presence of three phosphate groups. The prefix 'tri-' means three.
Visualize the molecular structure of ATP: it includes an adenine base, a ribose sugar, and three phosphate groups linked in a chain.
Consider the role of ATP in cellular processes. The three phosphate groups are crucial for energy transfer, as ATP releases energy when it loses a phosphate group to become ADP (adenosine diphosphate).
Review the options given in the problem. The correct answer is 'Three,' as confirmed by the name and structure of ATP.