The Membrane Potential Across the Inner Mitochondrial Membrane is Established

Question

The membrane potential across the inner mitochondrial membrane is established by A) Pumping out Na⁺ ions by the Na, K-ATPase B) Higher permeability to H⁺, which has a higher concentration inside the m itochondria C) Higher permeability to H⁺, which has a lower concentration inside the mitochondria D) Pum ping out H⁺ ions by the electron transport chain E) Pumping out K⁺ ions by the Na, K-ATPase

Accepted Answer

The membrane potential across the inner mitochondrial membrane is primarily established by the electron transport chain, which pumps protons (H+) out of the mitochondrial matrix, creating a proton gradient and a charge difference across the membrane.