Heterotrophs:
1, heterotrophs refers to those organisms that can only use ready-made organic substances in the external environment as energy and carbon sources, ingest these organic substances into the body, convert them into their own components, and store energy. Such as: fungi living in decay and parasitism, most kinds of bacteria.
2. Organisms that cannot synthesize organic matter by themselves, but must take exogenous organic matter as food and obtain energy by decomposing and oxidizing organic matter. Include animals, general non-chemical bacteria and fungi. They are consumers of organic matter in the ecosystem.
3. Obtain life-sustaining energy from degrading other biosynthetic complex organic substances. Including animals that swallow organic nutrients, such as insect-eating fish, herbivorous cattle and sheep; And organisms that permeate and absorb organic nutrients, such as fungi and parasitic higher plants.
4, can only use ready-made organic matter as their own nutritional organisms. Only a few plants belong to heterotrophic species, such as dodder, an obligate parasitic plant in higher plants.
We can't use the carbon dioxide in the atmosphere. We must take complex carbon-containing organic molecules such as sugar from the environment as carbon sources to synthesize all its carbon-containing biomolecules. Because they need more complex forms of carbon sources, they must rely on other cell products to survive. Heterotrophs relies on the degradation of organic nutrients produced by autotrophs to obtain energy.
6. You can't synthesize simple inorganic substances into organic substances. You can only rely on ready-made organic substances to directly or indirectly feed on autotrophs and get energy from them. Mainly refers to animals and heterotrophic microorganisms. According to the different feeding habits of heterotrophs, it can be divided into: herbivores; Carnivores; Omnivores; Scavengers; Scavengers; Heterotrophic microorganisms, etc.
7. This kind of bacteria is the main member of the bacterial family, with the largest variety and quantity, such as Bacillus subtilis, pathogenic bacteria and most other bacteria. From the aspect of assimilation, it can be divided into saprophytic and parasitic according to its habitat and the way of obtaining nutrients.
8. From the perspective of alienation, this kind of bacteria is aerobic and must live in an aerobic environment. In the process of productivity metabolism, molecular oxygen is the final electron acceptor of aerobic respiration. Vibration, stirring or ventilation are needed to provide sufficient oxygen during culture.