What are facultative anaerobic microorganisms, facultative anaerobes?

Facultative anaerobic microorganisms, i.e., can be metabolized both in aerobic and anaerobic conditions. However, in these two cases, the biochemical reactions in the body are different, that is, the production pathways are different.

These microorganisms have a wide range of adaptations and can grow in both aerobic and anaerobic environments. Generally, aerobic growth is the mainstay, and aerobic energy depends on respiratory capacity; It has anaerobic growth capacity, and can be produced by fermentation or anaerobic respiration when there is no oxygen. Such as Escherichia coli (e

Coli), Enterobacter aerogenes and other members of the Enterobacteriaceae family, Bacillus lichenifornus, Saccharomyces cerevisiae, etc. Among facultative anaerobes, many are like Escherichia coli, which rely on respiration when oxygen is present and fermentation for energy when oxygen is absent. But there are also some like lactic acid bacteria, even if there is oxygen, mainly through fermentation to obtain energy.

Thus, even facultative anaerobes can be used in a wide range of conditions, from those that grow very well under aerobic conditions to those that grow very well under anaerobic conditions.

Organisms that perform aerobic respiration under aerobic conditions and anaerobic respiration under anaerobic conditions.

Facultative anaerobic bacteria (facultativeanaerobe) are also known as facultative aerobic microorganisms, aerobic bacteria, and facultative aerobic bacteria.

Microorganisms that can grow and reproduce in either aerobic or anaerobic environments.

Under aerobic (O2) or anoxic conditions, energy can be obtained by different oxidation methods. For example, yeast performs aerobic respiration in an aerobic environment, and ferments glucose to produce alcohol under anoxic conditions. Many intestinal bacteria, such as acetobacterium, E. coli, etc., fall into this category.

Facultative anaerobes have both aerobic respiration and anaerobic fermentation functions, and can grow in both aerobic and anaerobic environments, but they grow better when aerobic. Most pathogenic bacteria fall into this category.

What is the difference between facultative anaerobic bacteria and facultative aerobic bacteria, what is the difference between facultative anaerobic microorganisms and facultative aerobic microorganisms, and what is the difference between facultative anaerobic bacteria and facultative anaerobic microorganisms.

Hello, facultative anaerobic, that is, aerobic as the main and anaerobic as the supplement. That is, it is generally dominated by aerobic growth, and it relies on respiratory capacity when aerobic; It has anaerobic growth capacity, and can be produced by fermentation or anaerobic respiration when there is no oxygen. Facultative aerobic means that anaerobic respiration is the mainstay, supplemented by aerobic, and the principle is the same.

Facultative aerobic bacteria: can live in both oxygen-present and anaerobic conditions, through respiration capacity when aerobic and through fermentation or anaerobic respiration capacity when anaerobic, but live better when oxygen. There is no facultative anaerobic bacteria, if there is also a facultative good filial piety bacteria.

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Aerobic organisms: cats, dogs, birds and other animals, plants such as flowers and trees, and some aerobic bacteria.

Anaerobic organisms: anaerobic bacteria such as bifidobacteria.

Facultative anaerobic organisms: Enterobacteriaceae (Escherichia coli, pneumobacterium, Proteus, Enterobacteria, Typhoidus bacillus, Salmonella, Shigella, etc.), Staphylococcus, Streptococcus, Pneumococcus, Bacillus anthracis and Diphtheria bacillus, etc.

Do you want to give an example? Aerobic organisms: Most organisms are like this, and the general exam will ask what aerobic bacteria are, such as nitrifying bacteria. Anaerobic type: Tetanus bacillus. Facultative anaerobic: yeast.

Aerobic organisms refer to organisms that can use oxygen for aerobic respiration and cannot survive without oxygen for a long time, such as eukaryotes. Anaerobic organisms that cannot use oxygen are difficult to survive in an oxygen-like environment, such as lactic acid bacteria. Facultative anaerobic types survive well in both aerobic and anaerobic situations, such as yeasts.

Bacteria can respire aerobically or anaerobically.

Yeasts are facultative anaerobic organisms, meaning they can live in both aerobic and non-oxygen conditions.

Lactic acid bacteria are anaerobic organisms that die in the presence of oxygen! Can't survive! Most living things need oxygen!

Obligate anaerobic refers to the fact that it can only grow and reproduce in an anaerobic environment. This type of bacteria lacks a complete respiratory enzyme system and can only carry out anaerobic fermentation, not only can not use molecular oxygen, but also has a toxic effect on free oxygen. Obligate anaerobes can only survive in an environment where there is no presence of free oxygen.

Facultative anaerobes are microorganisms that can grow and reproduce in either aerobic or anaerobic environments. Energy can be obtained through different oxidation methods under aerobic (O2) or anoxic conditions, and has both aerobic respiration and anaerobic fermentation functions. It can grow in both aerobic and anaerobic environments, but it grows better when it is aerobic and only survives when it is anaerobic.

Anaerobic, that is, can not grow in the presence of aerobic, many pathogenic bacteria are anaerobic bacteria, such as your wound pus, to cut, and then wipe some hydrogen peroxide, is to expose anaerobic bacteria to the air, hydrogen peroxide not only oxidation, but also provide sufficient oxygen, so as to kill anaerobic bacteria.

Facultative anaerobic bacteria grow well under anaerobic conditions, but they can also grow under anaerobic conditions and will not die. Such as yeast. It can grow with or without aerobic.