Question

Name one organism outside the animal kingdom that undergoes cellular respiration. Provide a brief explaination on how the organism uses cellular respiration.

Answer 1

All the living organisms, prokaryotic or eukaryotic undergoes cellular respiration. Examples are, bacteria, plants like mango tree, strawberry, apple, fungus like Penicillium, Aspergillus, algae like Spirulina etc.

These organisms used the process of cellular respiration for The breakdown of glucose into carbon dioxide and water which ultimately result in the generation of ATP. In eukaryotes, cellular respiration takes place in mitochondria but in prokaryotes, it takes place in cytoplasm and plasma membrane. The process begins with the partial oxidation of glucose into two molecules of pyruvic acid, which is also called as glycolysis. Pyruvic acid is there decarboxylated to acetyl coenzyme a which then enters citric acid cycle. All these three steps result in the formation of high energy electron Carriers and ATP by substrate level phosphorylation. The higher energy electron Carriers at the electron transport chain to generate ATP by the process of oxidative phosphorylation. All the ATP generated in the process of cellular respiration is used by the cell to perform its metabolic activity. This is the reason ATP is also called as the powerhouse of the cell.

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