Multiple Choice
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?
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3. Energy & Cell Processes
ATP
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The formation of glucose-6-phosphate from glucose is an endergonic reaction and is coupled to which of the following reactions or pathways?
A
The conversion of glucose + fructose to make sucrose
B
The contraction of a muscle cell
C
The active transport of a phosphate ion into the cell
D
The formation of ATP from ADP + Pi
E
The hydrolysis of ATP
Verified step by step guidance1
Understand that the formation of glucose-6-phosphate from glucose is an endergonic reaction, meaning it requires energy input to proceed.
Recognize that endergonic reactions are often coupled with exergonic reactions to provide the necessary energy. In biological systems, ATP hydrolysis is a common exergonic reaction used to drive endergonic processes.
Recall that ATP hydrolysis involves the breakdown of ATP into ADP and inorganic phosphate (Pi), releasing energy that can be used to drive other reactions.
Identify that the hydrolysis of ATP provides the energy needed for the phosphorylation of glucose to form glucose-6-phosphate, effectively coupling the two reactions.
Conclude that the correct coupling for the formation of glucose-6-phosphate is the hydrolysis of ATP, as it provides the necessary energy to drive the endergonic reaction.
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