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AAT Bioquest

Do all organisms perform the same type of cellular respiration?

Posted November 6, 2023


Answer

All organisms do not necessarily perform the same type of cellular respiration, as the specific type of respiration an organism requires depends on its cellular pathways and environmental conditions. Aerobic respiration occurs in the presence of oxygen. Glucose reacts with oxygen, forming ATP to be used by the cell. This type of respiration takes place in the majority of plants and higher animals. Water and carbon dioxide are formed as end products of the process. Microorganisms such as bacteria, archaea, and fungi living in low oxygen or oxygen-less environments must respire anaerobically in order to survive. For example, prokaryotic archaea such as methanogens reduce carbon dioxide to methane in order to oxidize NADH. Bacteria which make yogurt (Lactobacillus) perform lactic acid fermentation in the absence of oxygen. These bacteria convert lactose to glucose, which then enters glycolysis and subsequent lactic acid fermentation.

Additional resources

Cellular respiration

Cellular Processes

Cell Signaling

PhosphoWorks™ Fluorimetric ATP Assay Kit