Multiple Choice
Where is the energy in ATP stored?
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7. Energy and Metabolism
ATP
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How does ATP provide the energy that cells need?
A
By forming a bond with glucose molecules
B
By converting into ADP and releasing a water molecule
C
By storing energy in the form of lipids
D
By breaking the bond between the second and third phosphate groups
Verified step by step guidance1
Understand that ATP (adenosine triphosphate) is a molecule that stores energy in cells. It consists of an adenosine molecule bonded to three phosphate groups.
Recognize that the energy stored in ATP is primarily found in the bonds between its phosphate groups, especially the bond between the second and third phosphate groups.
Learn that when a cell needs energy, ATP undergoes a process called hydrolysis, where the bond between the second and third phosphate groups is broken.
During hydrolysis, ATP is converted into ADP (adenosine diphosphate) and an inorganic phosphate (Pi), releasing energy that the cell can use for various functions.
Note that this release of energy is crucial for cellular processes such as muscle contraction, active transport, and chemical synthesis.
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