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AAT Bioquest

What are the differences between aerobic respiration and anaerobic respiration?

Posted November 6, 2023


Answer

Basis of differentiation

Aerobic respiration

Anaerobic respiration

Definition

Aerobic respiration occurs in the presence of oxygen

Anaerobic respiration occurs without the presence of oxygen 

Gas exchange

Gasses are exchanged during aerobic respiration

Gasses are not exchanged during anaerobic respiration

Process of glucose

Glucose breaks down into water and carbon dioxide

Glucose breaks down into carbon dioxide, ethyl alcohol, and energy

ATP produced

Produces 36 ATP molecules per glucose

Produces 2 ATP molecules per glucose

Occurrence

Occurs in the cytoplasm and within the mitochondria

Occurs solely in the cytoplasm

NAD+ regeneration

The NAD+ regeneration forms ATP

The NAD+ regeneration does not form ATP

Organisms

Primarily occurs in complex organisms

Occurs in less complex organisms such as bacteria and yeast

End products

Its end products are carbon dioxide and water

End products can be lactic acid or carbon dioxide and alcohol

Efficiency

Takes a longer time to release energy, however forms much more ATP

Is a faster process compared to aerobic respiration, but releases much less ATP

Additional resources

Aerobic Respiration

Cellular Processes

Cell Signaling

PhosphoWorks™ Fluorimetric ATP Assay Kit