Multiple Choice
What is the primary purpose of the electron transport chain in cellular respiration?
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8. Respiration
Electron Transport Chain
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Where is the electron transport chain located in prokaryotes?
A
In the cytoplasm
B
In the plasma membrane
C
In the mitochondrial inner membrane
D
In the nucleoid region
Verified step by step guidance1
Understand that prokaryotes, such as bacteria, do not have membrane-bound organelles like mitochondria, which are present in eukaryotic cells.
Recognize that the electron transport chain (ETC) is a series of protein complexes that transfer electrons through a membrane to create a proton gradient that drives ATP synthesis.
In eukaryotes, the ETC is located in the inner mitochondrial membrane, but prokaryotes lack mitochondria.
In prokaryotes, the ETC is embedded in the plasma membrane, which serves a similar function to the inner mitochondrial membrane in eukaryotes.
Conclude that the correct location of the electron transport chain in prokaryotes is the plasma membrane, as it facilitates the necessary processes for ATP production.
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