Nutrient catabolism that does not require oxygen, thus acting as an alternative pathway when aerobic respiration is not possible. In the final step of the electron transport chain, the final electron acceptor is an inorganic molecule that is not oxygen. Users of these pathways have modified ETS carriers to accommodate electron transfer to different final acceptors, which can produce smaller electrochemical gradients and thus generate less ATP.

Anaerobic Respiration

A catabolic pathway requiring oxygen and involving the catabolism of glucose to ultimately release energy necessary for cellular functions. In the final step of the electron transport chain, the final electron acceptor is an oxygen molecule, which gets reduced into water, by cytochrome oxidase. 

Aerobic/Cellular Respiration

Two types of cellular respiration include:

- Aerobic respiration
- Anaerobic respiration

University of Notre Dame

A catabolic pathway in which energy is released from nutrient oxidation to be used by the cell

Respiration

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