Textbook Question
The best definition of ATP is that it is
a. a molecule stored for food use.
b. a molecule that supplies energy to do work.
c. a molecule stored for an energy reserve.
d. a molecule used as a source of phosphate.
12. Microbial Metabolism
ATP
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Which of the following is the most correct interpretation of the figure?
a) Energy from food sources can be used directly for performing cellular work.
b) ADP + Pi are a set of molecules that store energy.
c) ATP is a molecule that acts as an intermediary to store energy for cellular work.
d) Pi acts as a shuttle molecule to move energy from ATP to ADP.
A
Energy from food sources can be used directly for performing cellular work.
B
ADP + Pi are a set of molecules that store energy.
C
ATP is a molecule that acts as an intermediary to store energy for cellular work.
D
Pi acts as a shuttle molecule to move energy from ATP to ADP.
Verified step by step guidance1
Examine the diagram provided. It shows a cycle involving ATP, ADP, and Pi, with arrows indicating the flow of energy.
Identify the key components in the diagram: ATP (adenosine triphosphate), ADP (adenosine diphosphate), and Pi (inorganic phosphate).
Notice the direction of the arrows: Energy from food is used to convert ADP and Pi into ATP, and ATP is then used to provide energy for cellular work.
Understand the role of ATP: It acts as an energy intermediary, storing energy from food and releasing it for cellular processes.
Evaluate the options given: The correct interpretation is that ATP is a molecule that acts as an intermediary to store energy for cellular work, as shown by the cycle in the diagram.
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