What is fermentation process? ​

Fermentation is a metabolic process that produces chemical changes in organic substrates through the action of enzymes. In biochemistry, it is narrowly defined as the extraction of energy from carbohydrates in the absence of oxygen. 

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Fermentation is a metabolic process that produces chemical changes in organic substrates through the action of enzymes through chemical breakdown of a substance by bacteria, yeasts, or other microorganisms,

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unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.

cell division is not regulated in tumor cells.