Electron Transport and Chemiosmosis Flashcards

Flashcards about Electron Transport and Chemiosmosis

Electron Transport Chain (ETC)

A series of proteins along the inner mitochondrial membrane that accepts electrons from NADH and FADH2.

Electronegativity

The components of the ETC are arranged in order of increasing .

Oxygen

Strips two electrons from the final protein complex in the electron transport chain and combines with two protons to form water.

Oxygen

The final electron acceptor in the electron transport chain.

Chemiosmosis

The process where the energy that drives ATP synthesis comes from the movement of protons through a membrane.

ATP Synthase (ATPase)

The enzyme complex that protons pass through to re-enter the mitochondrial matrix, leading to ATP synthesis.

Oxygen

The strong oxidizing agent required for the continuous production of ATP.

Electrochemical Gradient

The gradient created by protons pumped into the intermembrane space, storing free energy.

ATP synthase (ATPase)

The enzyme associated with special proton channels through which protons are forced to pass.

Proton-motive force (PMF)

The force that moves protons through the ATPase complex, driving ATP synthesis.

NADH

Passes its electrons on to the first protein complex (NADH dehydrogenase) in the ETC.

FADH2

Transfers its electrons to Q, the second component of the chain, in the ETC.

Cytochrome oxidase complex

The components of the ETC are NADH dehydrogenase, ubiquinone (Q), cytochrome b-c1 complex, cytochrome c, and _.

Exergonic

The ETC is a highly __ process.