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Growth Requirements for Microorganisms

Growth Requirements for Microorganisms - Growth...

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Growth Requirements for Microorganisms A characteristic of microorganisms is their ability to grow and form a population of organisms. One of  the results of microbial metabolism is an increase in the size of the cell. The many requirements for  successful growth include those both chemical and physical. Chemical requirements.  In order to grow successfully, microorganisms must have a supply of water  as well as numerous other substances including mineral elements, growth factors, and gas, such as  oxygen. Virtually all chemical substances in microorganisms contain  carbon  in some form, whether  they be proteins, fats, carbohydrates, or lipids. Perhaps 50 percent of a bacterium's dry weight is  carbon. Carbon can be obtained from organic materials in the environment, or it may be derived from  carbon dioxide. Both chemoautotrophic and photoautotrophic microorganisms obtain their energy 
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