Multiple Choice
Where is energy stored in ATP?
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7. Energy and Metabolism
ATP
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How many phosphate groups does ADP have?
A
Three
B
Four
C
One
D
Two
Verified step by step guidance1
Understand the structure of ATP (Adenosine Triphosphate), which consists of an adenosine molecule bonded to three phosphate groups.
Recognize that ADP (Adenosine Diphosphate) is formed when ATP loses one phosphate group through a process called hydrolysis.
Recall that the prefix 'di-' in 'diphosphate' indicates the presence of two phosphate groups.
Visualize the chemical structure of ADP: Adenosine - Phosphate - Phosphate.
Conclude that ADP contains two phosphate groups, as indicated by its name and structure.
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