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Multiple Choice
What is a high-energy compound that is stored within muscle cells?
A
Glycogen
B
Adenosine diphosphate (ADP)
C
Lactic acid
D
Creatine phosphate
Verified step by step guidance
1
Understand the role of high-energy compounds in muscle cells. These compounds store energy that can be quickly mobilized during muscle contraction.
Identify the common high-energy compounds found in muscle cells. These include ATP (adenosine triphosphate), ADP (adenosine diphosphate), and creatine phosphate.
Recognize that creatine phosphate is a high-energy compound that serves as a rapid source of energy by donating a phosphate group to ADP to regenerate ATP during short bursts of activity.
Differentiate creatine phosphate from other compounds like glycogen and lactic acid. Glycogen is a stored form of glucose, and lactic acid is a byproduct of anaerobic metabolism, neither of which directly serve as immediate high-energy sources.
Conclude that creatine phosphate is the correct answer as it is specifically stored within muscle cells to provide quick energy during muscle contraction.