For aerobic respiration to work for you, you should make sure its advantages weigh out the disadvantages on your end. Anaerobic Respiration as a Fail-Safe Mechanism In multi-cellular organisms that require oxygen, such as human beings, anaerobic respiration can act as a backup when cellular oxygen is depleted.
Article objectives To distinguish between obligate aerobes, obligate anaerobes, and facultative anaerobes.
It may also explain how organisms were able to increase in size, adding multicellularity and great diversity. Making ATP in the absence of oxygen by glycolysis alone is known as fermentation. There must be value in this alternative way of making ATP. Why do you suppose that eating bread does not intoxicate you?
Figure 4: Lactobacillus bacteria use the same type of anaerobic respiration as our muscle cells.
What are the advantages of fermentation? Two different pathways accomplish this with rather famous products: lactic acid and ethyl alcohol Figure 1.
These facultative anaerobes use ancient anaerobic pathways when oxygen is limited.