Lesson 5: Cellular Respiration (Aerobic Vs Anaerobic Respiration)

Aerobic Respiration

A metabolic process occurring in the presence of oxygen, converting chemical energy from glucose into ATP.

Aerobic Respiration

Begins in the cytoplasm, ends in the mitochondria.

Aerobic Respiration

In _________, oxygen acts as an electron acceptor which helps produce ATPs more effectively and more quickly.

Anaerobic Respiration

Cellular respiration without oxygen as the electron acceptor.

Anaerobic Respiration

Takes place in low-oxygen environments (e.g., soil, freshwater, deep-sea). Some microbes in oxygenated environments also utilize it due to limited oxygen diffusion.

Anaerobic Respiration

Lower energy yield due to smaller reduction potential of electron acceptors. Produces 2 ATP per glucose molecule during fermentation.

Fermentation

is another pathway for anaerobic respiration, where the only energy extraction pathway is glycolysis, and the pyruvate is not further oxidized via the citric acid cycle.

Aerobic Respiration

Final electron acceptor: Oxygen

Aerobic Respiration

Preferred for complete oxidation of glucose, producing maximum ATP.

Anaerobic Respiration

Essential for biogeochemical cycles (carbon, nitrogen, sulfur) and survival in oxygen-deprived environments.

Anaerobic Respiration

Final acceptors: Sulfate, Nitrate, etc.