AP BIOLOGY

Detailed explanation-1: -Electron transport is the final stage of aerobic respiration. In this stage, energy from NADH and FADH2 is transferred to ATP. During electron transport, energy is used to pump hydrogen ions across the mitochondrial inner membrane, from the matrix into the intermembrane space.

Detailed explanation-2: -During chemiosmosis, electron carriers like NADH and FADH donate electrons to the electron transport chain. The electrons cause conformation changes in the shapes of the proteins to pump H+ across a selectively permeable cell membrane.

Detailed explanation-3: -The electron transport chain is a series of protein complexes embedded in the mitochondrial membrane. Electrons captured from donor molecules are transferred through these complexes. Coupled with this transfer is the pumping of hydrogen ions.

Detailed explanation-4: -In the electron-transport chain, H+ passes through channels. Through this process, ATP is produced by the movement of H+ ions moving down their c. electron gradient. Electron transport is the transport of protons across the inner mitochondrial membrane from the matrix.