Multiple Choice
What is the primary biological importance of the molecule adenosine triphosphate (ATP)?
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7. Energy and Metabolism
ATP
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How does ATP provide energy to a cell?
A
By forming a bond with glucose molecules
B
By converting into ADP and releasing a phosphate group
C
By breaking the bond between the second and third phosphate groups
D
By storing energy in the form of lipids
Verified step by step guidance1
Understand that ATP (adenosine triphosphate) is the primary energy carrier in cells, consisting of adenine, ribose, and three phosphate groups.
Recognize that the energy provided by ATP is stored in the bonds between its phosphate groups, particularly the bond between the second and third phosphate groups.
When a cell requires energy, ATP undergoes a process called hydrolysis, where the bond between the second and third phosphate groups is broken.
This reaction converts ATP into ADP (adenosine diphosphate) and an inorganic phosphate (Pi), releasing energy that the cell can use for various functions.
The released energy is then utilized by the cell to perform work, such as muscle contraction, active transport, and chemical synthesis.
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