When electrons flow along the electron transport chains of mitochondria, which of the following changes occurs? a. The pH of the matrix increases. b. ATP synthase pumps protons by active transport. c. The electrons gain free energy. d. NAD+ is oxidized.

Video transcript

Hi everyone here we have a question asking us which of the following causes an increase in the ph of the mitochondrial matrix. A the electrochemical gradient be the flow of electrons along the electron transport chain C a T p synthesis versus kenya keamy osmosis, or D. Extra ionic redox reactions. So as electrons flow across the electron transport chain through the lipid bi layer, we have the inner membrane space here. And as they flow along the electron transport chain, we have protons being pumped into the inter membrane space and these protons are being pumped into the inter membrane space, decreases the ph, I'm sorry, increases the ph of the mitochondrial matrix because they're being pumped out of the mitochondrial matrix. So our answer here is B, the flow of electrons along the electron transport chain. Thank you for watching. Bye.