Multiple Choice
Which of the following statements is true?
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7. Energy and Metabolism
ATP
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The free energy derived from the hydrolysis of ATP can be used to perform many kinds of cellular work. Which of the following is an example of the cellular work involved in the production of electrochemical gradients?
A
The beating of cilia
B
The chemical synthesis of ATP
C
Facilitated diffusion
D
Chromosome movement on microtubules
E
Proton movement against a gradient of protons
Verified step by step guidance1
Understand that ATP hydrolysis releases energy that can be used for various types of cellular work, including mechanical, transport, and chemical work.
Recognize that electrochemical gradients are created when ions are transported across a membrane against their concentration gradient, which requires energy input.
Identify that the movement of protons (H⁺ ions) against their concentration gradient is a process that establishes an electrochemical gradient, often referred to as a proton gradient.
Recall that the creation of a proton gradient is a form of active transport, which is a type of cellular work that requires energy, typically derived from ATP hydrolysis.
Conclude that the movement of protons against a gradient of protons is an example of cellular work involved in the production of electrochemical gradients, as it uses energy to transport ions against their natural flow.
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