Aerobic bacteria, facultative bacteria, and anaerobic bacteria

Aerobic bacteria are also known as aerobic bacteria, aerobic microorganisms. Grow and reproduce in an aerobic environment, oxidize the productive metabolic process of organic or inorganic matter, and use molecular oxygen as the final electron acceptor for aerobic respiration. Most bacteria, actinomycetes, and fungi are included.

Aerobic respiration is performed, but there are no mitochondria. Such as: streptomycin, erythromycin, Frankia.

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 E. coli, fall into this category. It has both the functions of aerobic respiration and anaerobic fermentation, and can grow in both aerobic and anaerobic environments, but it grows better when aerobic. Most pathogenic bacteria fall into this category.

Anaerobic bacteria refer to bacteria that can only grow and reproduce in an oxygen-free 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. Such as tetanus bacillus, botulinum toxin, capsular bacillus, etc.

Microorganisms that can only survive in an environment where free oxygen is not present. Methanobacteria are one such bacteria. Methanobacteria are used to produce biogas, and anaerobic bacteria are used to treat various organic wastes and wastewater.

That is the condition of reproduction in both aerobic and anaerobic environments.

Aerobic bacteria multiply quickly in an oxygen-rich environment and are anaerobic bacteria.

It reproduces vigorously in an oxygen-free environment, but reproduces slowly or even dies in a melodious environment.

Homogenic bacteria are the two types that never get tired, and they can live there, yeast.

It's facultative bacteria.

The fermentation process is to use facultative bacteria to multiply in an aerobic environment and then seal them for anaerobic respiration.

Fermentation begins. Hope mine is helpful to you.

The dependence of the living environment on oxygen concentration.

Obligate anaerobes: can only grow in anaerobic conditions, and molecular oxygen is harmful to them. The main ones are: clostridia, methanogenic bacteria, Vibrio thiodesulfur.

Aerobic bacteria: can survive only where oxygen is available, through aerobic respiration capacity, but also through oxygen-producing photosynthesis.

Capacity. Anaerobic bacteria.

Only survive in anaerobic conditions, through fermentation or anaerobic respiration.

capacity, or through photosynthesis capacity that does not produce oxygen, oxygen is toxic to it.

Facultative aerobic Qiliang bacteria: can live in both oxygen-present and anaerobic conditions, through respiration capacity when aerobic, through fermentation or anaerobic respiration capacity when anaerobic, but it lives better when oxygen. The term "facultative anaerobic bacteria" is not available, and if there is, it also refers to facultative aerobic bacteria.

There are two kinds, one is aerobic bacteria, which does not need oxygen to live, but oxygen is not toxic to it;

The other is microaerobic bacteria, which need oxygen to live but the oxygen concentration cannot be too high.

Aerobic bacteria, anaerobic bacteria, as the name suggests. 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.

Aerobic bacteria: can only survive where oxygen is available, through aerobic respiration capacity, but also through oxygen-producing photosynthesis capacity.

Anaerobes: survive only in the absence of oxygen, through fermentation or anaerobic respiration, or through photosynthesis without oxygen, oxygen is toxic to it.

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. The term "facultative anaerobic bacteria" is not available, and if there is, it also refers to facultative aerobic bacteria.

There are two kinds, one is aerobic bacteria, which does not need oxygen to live, but oxygen is not toxic to it;

The other is microaerobic bacteria, which need oxygen for life but the oxygen concentration cannot be too high, and too high will also have toxic effects.

Two names for a class of bacteria.

Facultative anaerobes are also called facultative aerobes. 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.

For example, Escherichia coli (Enterobacteraerogenes) and other members of the Enterobacteriaceae family, Bacillus lichenifornus, Saccharomyces cerevisiae, etc.

LZ can refer to microbiology.

C. tuberculosiscoccus can be classified into 4 groups according to the need for oxygen from bacteria:

1. Obligate aerobes: cannot grow in an environment without free oxygen, such as Mycobacterium tuberculosis and Vibrio cholerae;

2 Microaerophiles: grow best at low oxygen pressure (5% 6%), such as Campylobacter jejuni and Helicobacter pylori;

3 Facultative anaerobic bacteria: grow in either aerobic or anaerobic environments, most pathogenic bacteria belong to this category;

4 Obligate anaerobes: can only be fermented in an oxygen-free environment, such as Clostridium tetani and Bacteroides fragilis.

Anaerobic bacteria can be divided into 3 main groups according to their tolerance to oxygen: 1) Obligate anaerobic: Anaerobic bacteria that are extremely sensitive to oxygen will die when exposed to oxygen. The representative species is Lunotonas.

2) Facultative anaerobic: It can use the oxygen in the aerobic environment for aerobic respiration. But when there is no oxygen, they will partially ferment and some will undergo anaerobic respiration; Examples of facultative anaerobic bacteria are Staphylococcus spp., Corynebacterium spp., Listeria spp., etc., whereas yeast in fungi is also facultative anaerobic.

3) Aerobic resistance and anaerobic: It can survive in an oxygen-like environment, cannot use oxygen, and grows well under anaerobic conditions, but does not grow well under aerobic conditions, and the representative species is Clostridium histolyticus.

What are the anaerobic bacteria, such as yeast or something, you can find them in the biology textbooks of junior high school.

Hello; Anaerobes are a class of bacteria that grow better in the absence of oxygen than in an aerobic environment, but not on the surface of a solid medium in air (18% oxygen) and/or 10% carbon dioxide concentrations. This type of bacteria lacks a complete metabolic enzyme system, and its energy metabolism is carried out by anaerobic fermentation. It can cause infections in different parts of the body, including appendicitis, cholecystitis, otitis media, oral infections, endocarditis, endometritis, brain abscess, myocardial necrosis, osteomyelitis, peritonitis, empyema, salpingitis, septic arthritis, liver abscess, sinusitis, intestinal surgery or post-traumatic wound infection, pelvic inflammatory disease, and bacteremia.

Hope it helps!