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Electron Transport System and ATP Synthesis

View the animation below, then complete the quiz to test your knowledge of the concept.






1Arrange the following electron acceptors in the proper order in which they participate in electron transport.
1 = Cytochrome c
2 = Oxygen
3 = Cytochrome c oxidase
A)1, 2, 3
B)1, 3, 2
C)2, 3, 1
D)3, 1, 2
E)3, 2, 1



2The electrons that are transferred through the electron transport system initially belonged to
A)NADH.
B)FADH2.
C)ATP.
D)oxygen.
E)NADH and FADH2.



3The movement of protons through ATP synthase occurs from the
A)matrix to the intermembrane space.
B)matrix to the cytoplasm.
C)intermembrane space to the matrix.
D)intermembrane space to the cytoplasm.
E)cytoplasm to the intermembrane space.



4When oxygen accepts electrons, water is produced as a byproduct.
A)True
B)False



5The formation of ATP as a result of the activity of the electron transport system is termed substrate-level phosphorylation.
A)True
B)False







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