Anaerobic respiration | Fermentation |
It is an intracellular process. | It may be an extracellular process. |
It occurs in the absence of oxygen. | It requires a small amount of oxygen. |
CO2 is not released. | CO2 is released as the by-product. |
It uses either endogenous or exogenous non-oxygen compounds as terminal electron acceptors. | In this, energy is produced from organic compounds using endogenous electron acceptors. |