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    Bacteria nutrition depends on the type of bacteria. There are some bacteria that are able to synthesize their food, while there are many bacteria that are unable to manufacture their food and consume food substances from living organisms. These act as parasites or decomposer that decomposes decaying material through their cell walls. The bacteria that decompose organic matter are called saprophytes.

    Ways of bacteria nutrition:

    There are many ways through which bacteria get food. Some of the ways through which bacteria get food are discussed below.


    These are the bacteria that can obtain energy from chemicals, can’t synthesize own food and reduce carbon from the inorganic compound. These bacteria obtain energy from the oxidation of inorganic compounds and obtain energy from chemicals. But, these bacteria cannot fix carbon dioxide into food. They can’t perform photosynthesis. These bacteria can also obtain energy, carbon, and obtain biomass for biosynthetic reactions from organic compounds.

    For example Salmonella


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