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-Electrons from cytosolic NADH are transferred to the matrix via electron ______ systems.
A) shuttle
B) matrix
C) respiration
D) copper
E) heme
F) tunnel
G) plasma membrane
H) coenzyme Q
I) cytosol
J) antioxidant
K) wire
L) proton pump

Question

Matching
Choose the correct answer from the list.Not all the answers will be used.

-Electrons from cytosolic NADH are transferred to the matrix via electron ______ systems.
A) shuttle
B) matrix
C) respiration
D) copper
E) heme
F) tunnel
G) plasma membrane
H) coenzyme Q
I) cytosol
J) antioxidant
K) wire
L) proton pump

Quizplus · Accepted Answer

Only shuttle systems, such as the malate-aspartate and glycerol-3-phosphate shuttles, transfer electrons from cytosolic NADH to the mitochondrial matrix.

Answer: H
 Coenzyme Q (ubiquinone) is a mobile electron carrier that transfers electrons along the electron transport chain in the inner mitochondrial membrane.

Answer: L
 The electron transport chain in the inner mitochondrial membrane pumps protons from the matrix to the intermembrane space, creating a proton gradient that drives ATP synthesis.

Matching Choose the Correct Answer from the List.Not All the Answers