The following statements concern the relationship between mitochondrial hydrogen
ID: 179079 • Letter: T
Question
The following statements concern the relationship between mitochondrial hydrogen ion concentration and energy storage as ATP during oxidative phosphorylation. Classify each statement as either accurate or inaccurate. The pH in the inter membrane space is higher than the pH in the mitochondrial matrix. H^+ concentration is higher in the inter membrane space than in the mitochondrial matrix. Energy is generated as a result of the difference in hydrogen ion concentration between the mitochondrial matrix and the cytoplasm. Oxidative phosphorylation relies on the H^+ gradient generated by the electron transport chain. ATP synthase uses energy from ATP to move H^+ into the mitochondrial matrix. Hydrogen ions cannot freely pass through the inner mitochondrial membrane.Explanation / Answer
Accurate statements:
H+ ion concentration is higher in the intermembrane space than in the mitochondrial matrix.
Oxidative phosphorylation relies on the H+ gradient generated by the electron transport chain.
Hydrogen ions cannot freely pass through the inner mitochondrial membrane.
Inaccurate statements:
The pH in the intermembrane space is higher than the pH in the mitochondrial matrix.
Energy is generated as a result of the difference in the hydrogen ion concentration between the mitochondrial matrix and cytoplasm.
ATP synthase uses energy from ATP to move H+ into the mitochondrial matrix.