What is Heterotroph? Biologically known as external support heterotrophic organisms, neither organic synthesis nor Exogenous Organic food obtains energy by biological oxidative decomposition of organic matter, including animals, non-chemical energy bacteria, and fungi. They are consumers of organic matter in the ecosystem.
Definition of Heterotroph
In the process of assimilation, organisms cannot directly use inorganic substances to make organic substances. They can only convert the ready-made organic substances ingested from the outside into their constituent substances and store energy. This type of metabolism is called Heterotroph. Such organisms become autotrophs or heterotrophs.
A cell or an organism needs to take in various carbon-containing compounds from animals and plants as its carbon source and synthesize all its carbon-containing biomolecules from these compounds and small inorganic molecules.
Introduction of Heterotroph
Autotrophic organisms refer to those organisms that can only use the existing organic matter in the external environment as a source of energy and carbon, take these organic matter into the body, convert them into their constituent substances, and store energy, such as fungi of rot and parasitic life, most kinds of bacteria.
Neither in organic synthesis must Exogenous Organic food obtain energy by biological oxidative decomposition of organic matter, including animals, non-chemical energy bacteria, and fungi. They are consumers of organic matter in the ecosystem.
Living organisms that obtain energy from the degradation of other biosynthesized complex organic substances to maintain life. Including animals that eat organic nutrients, such as insectivorous fish, cattle and sheep that eat grass, and organisms that absorb organic nutrients, such as fungi and parasitic higher plants.
You can only use the ready-made organic matter as your nourishing creature. Only a few plants belong to heterotrophic organisms, such as the obligate parasitic plant Cuscuta in higher plants.
The carbon dioxide in the atmosphere cannot be used, and more complex carbon-containing organic molecules such as sugar must be taken from the environment as a carbon source to synthesize all of its carbon-containing molecule organisms. Because they require a more complex form of carbon source, they must rely on other cell products to survive. Heterotrophs obtain energy by degrading organic nutrients produced by autotrophs.
It cannot synthesize simple inorganic matter into organic matter. Still, it can only rely on ready-made organic matter for food, directly or indirectly feed on autotrophic organisms, and obtain energy from organisms. Mainly refers to animals and heterotrophic microorganisms. According to the different eating habits of heterotrophic organisms, it can be divided into (1) herbivores; (2) carnivores; (3) omnivores; (4) scavengers; (5) crumb-eating organisms; (6) heterotrophic microorganisms, etc.
Classification of Heterotroph
Heterotrophic aerobic
This type of bacteria is the primary member of a large family of bacteria, with the most types and numbers, such as Bacillus subtilis ( Bacillus subtilis ), which generally get most bacteria such as pathogenic bacteria. From the perspective of assimilation, they are divided into saprophytic and parasitic based on their habitat and how they obtain nutrients. Both types exist between saprophytic and parasitic and saprophytic, and the intermediate parasitic, e.g., Shijun Bdellovibrio ( B. Bacteriovorus ) in the life cycle of parasitic and saprophytic two stages.
From the perspective of alienation, these bacteria are aerobic and must live in an aerobic environment. The process of energy production metabolism uses molecular oxygen as the final electron acceptor for aerobic respiration. Vibration, stirring, or aeration require during cultivation to supply sufficient oxygen.
Aerobic and anaerobic bacteria
The name implies facultatively anaerobic, which means that aerobic is the mainstay, and anaerobic is the auxiliary. Generally, aerobic growth is the mainstay. The respiration capacity relies on when aerobic; it also has anaerobic growth, and the total is through fermentation or anaerobic respiration when there is no oxygen. Facultative aerobic respiration means anaerobic respiration is the mainstay, and aerobic respiration is supplemented. The truth is the same.
Facultative aerobic bacteria
One kind of bacteria is called facultative anaerobic bacteria, also known as facultative aerobic bacteria ( facultative aerobes ). Such microorganisms have a wide range of adaptations and can grow in an aerobic or anaerobic environment. Generally, aerobic growth is the mainstay, relying on respiration capacity when aerobic.
Both have anaerobic growth capacity and producing power through fermentation or anaerobic respiration when anaerobic, such as Escherichia coli ( E. Coli ), Enterobacter aerogenes ( Enterobacter aerogenes ) and other Enterobacteriaceae ( Enterobacteriaceae members), Bacillus licheniformis ( Bacillus licheniformis ), yeast ( Saccharomyces cerevisiae ) and the like.
Also known as aerobic bacteria and aerobic microorganisms. It grows and reproduces in an aerobic environment, oxidizes organic or inorganic substances, and uses molecular oxygen as the final electron acceptor to carry out aerobic respiration, including most bacteria, actinomycetes, and fungi.
The role of a stable and effective biochemical filtration system for the aquarium is to remove the ammonia molecules, ammonia ions, nitrate ions, and nitrogen dioxide molecules contained in the water. The entire removal process generally called the nitrogen cycle.
Denitrifying bacteria
The first explanation: refers to bacteria that use ammonia or nitrite as the primary energy source for survival and that can use carbon dioxide as the primary carbon source. Denitrification must carry out under anaerobic or hypoxic conditions.
Denitrifying bacteria (photosynthetic bacteria is also anaerobic bacteria)Nitrifying bacteria: convert ammonia into nitrogen dioxide, and nitrifying bacteria: convert nitrogen dioxide into nitrate ions. Denitrifying bacteria: convert nitrate ions into nitrogen, nitric oxide, and nitrous oxide. If you want to achieve stable ammonia biochemical filtration in the aquarium, all the above are indispensable. Generally, we are most concerned about nitrifying bacteria (including nitrifying bacteria and nitrosating bacteria) and neglecting denitrifying bacteria, which leads to the accumulation of nitrate ions (this phenomenon is more evident in the filtration system of seawater tanks).
Therefore, the nitrate remover of the seawater tank is essential. But there is also a simple way to solve it, using a unique filter material for cultivating anaerobic bacteria (there is one for AB, and there is also a glass-ceramic ball). The above are some of my understanding of filtration. I think these can give you a little reference when choosing filtration materials, filtration systems, and flora.
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