Chapter 18: Electron Transport and Oxidative Phosphorylation

These flashcards cover key terms and concepts about the electron transport chain and oxidative phosphorylation, summarizing the essential vocabulary needed for understanding the chapter.

Chemiosmotic Theory

The theory linking electron transport and ATP synthesis through proton gradients.

Complexes I–IV

A series of enzyme complexes involved in electron transport within the mitochondria.

Coenzyme Q (Ubiquinone)

A hydrophobic coenzyme that facilitates electron transport between complexes in the electron transport chain.

Proton Movement

Movement of protons (H+) across the mitochondrial membrane, contributing to the electrochemical gradient for ATP synthesis.

Oxidative Phosphorylation

The process by which ATP is produced using energy from electron transport and proton gradients.

NADH

A coenzyme that carries electrons to the electron transport chain from various metabolic processes.

Flavoproteins

Proteins containing flavin nucleotides (FMN or FAD) that are involved in electron transport.

Iron-Sulfur Proteins

Proteins that contain iron-sulfur clusters used as electron carriers in the electron transport chain.

Cytochromes

Heme-containing proteins that participate in redox reactions, including in the electron transport chain.

ATP Synthase

The enzyme that synthesizes ATP using the energy derived from the proton gradient established by the electron transport chain.