What is heterotrophic microbial metabolism?

What is heterotrophic microbial metabolism?

Heterotrophic metabolism is the biologic oxidation of organic compounds, such as glucose, to yield ATP and simpler organic (or inorganic) compounds, which are needed by the bacterial cell for biosynthetic or assimilatory reactions.

What are the four major components of microbial metabolism?


  • autotrophic – carbon is obtained from carbon dioxide (CO 2)
  • heterotrophic – carbon is obtained from organic compounds.
  • mixotrophic – carbon is obtained from both organic compounds and by fixing carbon dioxide.

What are the products of microbial metabolism?

In the process of metabolism, the microbes release various products. Sugars undergo anaerobic fermentation yielding acids, alcohols, ketones, aldehydes, carbon dioxide, and hydrogen. Some species of anaerobic genus Clostridium have been found to produce all these compounds (Grula et al., 1983).

What is metabolism quizlet microbiology?

Metabolism. the sum of all chemical reactions within a living organism. catabolism. enzyme regulated chemical reactions that release energy and breakdown of complex organic compounds into simpler ones; termed catabolic, degradative, generally hydrolytic and exergonic. hydrolytic reaction.

What are examples of heterotrophic bacteria?

Some examples of heterotrophic bacteria are Agrobacterium, Xanthomonas, Pseudomonas, Salmonella, Escherichia, Rhizobium, etc.

What is Heterotroph in microbiology?

A heterotroph is an organism that consumes other organisms in a food chain. 5 – 8. Biology, Ecology.

How do archaebacteria obtain energy?

(1983) have reported that several extremely thermophilic archaebacteria can live with carbon dioxide as their sole carbon source, obtaining energy from the oxidation of hydrogen by sulfur, producing hydrogen sulfide (H2S). They are thus capable of a new type of anaerobic metabolism, a possibly primeval mode of life.

Is bacteria heterotrophic or autotrophic?

Autotrophs are known as producers because they are able to make their own food from raw materials and energy. Examples include plants, algae, and some types of bacteria. Heterotrophs are known as consumers because they consume producers or other consumers. Dogs, birds, fish, and humans are all examples of heterotrophs.

Why is microbial metabolism important?

Throughout earth’s history, microbial metabolism has been a driving force behind the development and maintenance of the planet’s biosphere. Eukaryotic organisms such as plants and animals typically depend on organic molecules for energy, growth, and reproduction.

What two things can happen to pyruvic acid?

Pyruvic acid can be made from glucose through glycolysis, converted back to carbohydrates (such as glucose) via gluconeogenesis, or to fatty acids through acetyl-CoA. It can also be used to construct the amino acid alanine, and it can be converted into ethanol.

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