48. In the mitochondrial electron transport chain, as Complex III and Complex IV participate in electron transfer, which of the following important ion transfer phenomena occurs simultaneously?
(A) Protons (H+) are transferred from the mitochondrial matrix to the intermembrane space.
(B) Protons (H+) are pumped from the intermembrane space into the mitochondrial matrix.
(C) Calcium ions (Ca2+) are pumped from the intermembrane space into the mitochondrial matrix.
(D) Potassium ions (K+) are pumped from the mitochondrial matrix to the cytoplasm.

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統計： A(7), B(0), C(1), D(0), E(0) #3839983