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Which of the following statements about the role of ATP in cell metabolism is true?
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7. Energy and Metabolism
ATP
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Where is the energy stored in ATP?
A
In the bonds between the phosphate groups
B
In the ribose sugar
C
In the adenine base
D
In the hydrogen bonds
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Understand the structure of ATP (adenosine triphosphate), which consists of three main components: adenine, ribose sugar, and three phosphate groups.
Recognize that ATP is a nucleotide, and its energy storage capability is primarily due to the phosphate groups attached to the ribose sugar.
Learn that the bonds between the phosphate groups, specifically the high-energy bonds between the second and third phosphate groups, are where the energy is stored.
When ATP is hydrolyzed (reacts with water), it releases energy by breaking the bond between the second and third phosphate group, converting ATP to ADP (adenosine diphosphate) and an inorganic phosphate.
Understand that the energy released during this process is used by cells to perform various functions, such as muscle contraction, active transport, and chemical synthesis.
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