Anaerobic respiration

• No oxygen

  • No final acceptor of electrons from the electron transport chain

  • Stops functioning

  • No more ATP produced via oxidative phosphorylation

  • Reduced NAD and FAD can’t be oxidised

  • No oxidised NAD and FAD are available for dehydrogenation in the Krebs cycle

  • Krebs cycle stops

Anaerobic pathways

• Some cells oxidise the reduced NAD produced during glycolysis so it can be used for further hydrogen transport

• Glycolysis can continue and small amounts of ATP are still produces

• Different cells use different pathways to achieve this

Ethanol fermentation

• Reduced NAD transfers its hydrogens to ethanal to form ethanol

• In the first step of the pathway pyruvate is dec