What would happen to the ETC and oxidative phosphorylation pathway in the presence of excess NADH if the mitochondrial matrix were not closed,but opened up to the cytoplasm? A) The ETC complexes would function as normal, but no ATP would be made. B) The ETC and synthesis of ATP would continue as normal. C) The ETC complexes would transfer electrons from NADH to O₂, but no protons would be pumped. D) The NADH would react directly with O₂, generating excess heat.

Question

Quizplus · Accepted Answer

If the mitochondrial matrix were open to the cytoplasm, the proton gradient necessary for ATP synthesis would dissipate, preventing ATP production despite normal electron transport.

What Would Happen to the ETC and Oxidative Phosphorylation Pathway