2, heterotrophic bacteria, heterotrophic bacteria can not synthesize inorganic substances into organic substances by themselves, but can only maintain metabolism by ingesting organic substances. The fundamental difference between autotrophs and heterotrophs lies in whether inorganic substances can synthesize organic heterotrophs by themselves. Most microorganisms, most animals and other heterotrophs can act as decomposers and consumers in the ecosystem.
Heterotrophs is divided into saprophytic type, parasitic type and phagocytic type.
What is nurturing and autotrophic?
First of all, both are ecological terms. Self-reliance is simply to support yourself. Autotrophic organisms live and reproduce by inorganic nutrition. They use the energy obtained from chemical dark reactions such as respiration or photochemical reactions for carbon assimilation. Autotrophic organisms are divided into chemoautotrophic organisms and photoautotrophic organisms. Representative examples of autotrophic microorganisms are red sulfur-free bacteria, red sulfur bacteria, green sulfur bacteria, nitrifying bacteria, sulfur bacteria, hydrogen bacteria, iron bacteria, carbon monoxide bacteria and so on. In autotrophic microorganisms, such as hydrogen bacteria, with the substitution of available electron donors (for example, acetic acid is produced from hydrogen), it can sometimes be seen that carbonic acid assimilation replaces the reductive assimilation of organic nutrients (acetic acid, etc.). ). The same mechanism of carbon fixation cycle and energy harvesting system, as well as the regulation mechanism of autotrophs on the adaptive function of organic matter are being compared with photosynthetic organisms in order to clarify biochemically.
Heterotrophication is a way of life corresponding to autotrophy. Heterotrophs refers to those organisms that can only use the ready-made organic matter in the external environment (organic matter is produced by autotrophs) as energy and carbon sources, ingest these organic matters into the body, convert them into their own components, and store energy. Such as: fungi living in saprophytic and parasitic life, most kinds of bacteria and higher animals and plants.
It's simpler. Got it. Yeah.
Autotrophic organisms: organisms that can make their own organic nutrients, such as green plants, can make organic matter through photosynthesis, and some bacteria can synthesize lotus flowers through photosynthesis.
Heterotrophs: Organisms that can't make their own organic nutrients but live on ready-made organic nutrients, such as all animals and microorganisms that live saprophytically and parasitically.