The carriers of the electron transport chain are located
A) in the matrix of the mitochondria.
B) on the outer mitochondrial membrane.
C) on the cristae of the mitochondria.
D) within the intermembrane space.
E) within the cytoplasm of the cell.

Question

Quizplus · Accepted Answer

The electron transport chain is located on the cristae (folds) of the mitochondrial inner membrane. This is where the carriers of the electron transport chain are located, including complexes I-IV, cytochrome c, and coenzyme Q. The matrix of the mitochondria contains enzymes involved in the citric acid cycle, while the outer mitochondrial membrane is primarily involved in regulating the entry and exit of molecules into and out of the mitochondria. The intermembrane space is the space between the outer and inner mitochondrial membranes, but it does not contain the electron transport chain. The cytoplasm of the cell is where glycolysis occurs, but it is not the location of the electron transport chain.

The Carriers of the Electron Transport Chain Are Located