which-of-the-following-best-describes-the-role-of-the-electron-transport-chain-i

Question

Which of the following best describes the role of the electron transport chain in cellular respiration?

Accepted Answer

It pumps hydrogen ions across the mitochondrial membrane to create a concentration gradient.

Answer

It transports oxygen into the cell.

Answer

It directly synthesizes ATP from ADP and phosphate.

Answer

It breaks down glucose into pyruvate.