Multiple Choice
What is the primary source of ATP for cardiac muscle contraction?
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3. Energy & Cell Processes
Introduction to Cellular Respiration
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Which structures in the electron transport chain are primarily responsible for producing ATP?
A
Cytochrome c
B
NADH dehydrogenase
C
Ubiquinone
D
ATP synthase
Verified step by step guidance1
Understand the role of the electron transport chain (ETC) in cellular respiration, which is to transfer electrons through a series of complexes to ultimately produce ATP.
Identify the main components of the ETC: NADH dehydrogenase (Complex I), ubiquinone (Coenzyme Q), cytochrome c, and ATP synthase.
Recognize that ATP synthase is the enzyme responsible for synthesizing ATP from ADP and inorganic phosphate, using the proton gradient created by the ETC.
Note that while NADH dehydrogenase, ubiquinone, and cytochrome c are involved in electron transfer and creating the proton gradient, they do not directly produce ATP.
Conclude that ATP synthase is the structure primarily responsible for producing ATP in the electron transport chain.
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