Photoautotrophic: this is the type of plants and some autotrophic bacteria with pigments, such as green S bacteria. They use inorganic CO2 as C source and light energy as energy source to synthesize their own organic matter.
Chemotactic autotroph: An organism, such as nitrifying bacteria, uses inorganic CO2 as a carbon source to oxidize inorganic substances to generate energy, thus synthesizing its own organic matter.
Photoenergy heterotrophy: this kind is rare, which refers to organisms that use organic matter as C source and light energy as energy to synthesize organic matter.
Chemotaxis-heterotrophy: This is the nutrition mode of most animals and bacteria, which uses organic matter as C source and energy to synthesize its own organic matter.
Generally, autotrophy should be light autotrophy, and heterotrophy is chemical energy heterotrophy. The difference is 1. There are two kinds of carbon sources: carbon dioxide and organic matter. 2. Energy sources include light energy, oxidized inorganic matter and organic matter.
I hope it helps!
What is halophilic bacteria? A photoautotrophic B photoautotrophic C autotrophic D heterotrophic A, search Wikipedia or Wikipedia.
What is photoautotrophic, photoautotrophic, chemoautotrophic and heterotrophic in organisms depends on whether organisms can directly convert carbon dioxide into organic matter, which is autotrophic, otherwise it is heterotrophic; Anaerobic or aerobic depends on whether oxygen is needed in the process of oxidizing and decomposing substances. Normal operation requires aerobic, anaerobic normal operation requires anaerobic (anaerobic breathing).
Photosynthetic autotrophy is a common green plant. Its assimilative energy comes from light, which can convert carbon dioxide into organic matter.
Chemotactic autotrophic bacteria are common, such as nitrifying bacteria, whose assimilation process energy comes from the energy released by the redox process of chemical substances, which can convert carbon dioxide into organic matter. This can be divided into four life types according to C and energy sources.
Photoautotrophic: this is the type of plants and some autotrophic bacteria with pigments, such as green S bacteria. They use inorganic CO2 as C source and light energy as energy source to synthesize their own organic matter.
Chemotactic autotrophy: Organisms, such as nitrifying bacteria, that use inorganic CO2 as carbon source and oxidize inorganic substances to generate energy.
Photoenergy heterotrophy: this kind is rare, which refers to organisms that use organic matter as C source and light energy as energy to synthesize organic matter.
Chemotaxis-heterotrophy: This is the nutritional mode of most animals and bacteria, which uses organic matter as C source and energy to synthesize its own organic matter.
Explain the concepts of photoautotrophic, chemoautotrophic, photoheterotrophic and chemoautotrophic. According to the different sources of carbon and energy, these are four types of life.
Photoautotrophic: this is the type of plants and some autotrophic bacteria with pigments, such as green S bacteria. They use inorganic CO2 as C source and light energy as energy source to synthesize their own organic matter.
Chemotactic autotroph: An organism, such as nitrifying bacteria, uses inorganic CO2 as a carbon source to oxidize inorganic substances to generate energy, thus synthesizing its own organic matter.
Photoenergy heterotrophy: this kind is rare, which refers to organisms that use organic matter as C source and light energy as energy to synthesize organic matter.
Chemotaxis-heterotrophy: This is the nutrition mode of most animals and bacteria, which uses organic matter as C source and energy to synthesize its own organic matter.
What are heterotrophic 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 common 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.
What is the difference between the culture medium for cultivating photoautotrophs and chemoautotrophs? Photoautotrophs: autotrophs can use pigments and sunlight to synthesize their own organic matter from carbon dioxide, water and other inorganic substances.
In autotrophs, plankton can use the energy released by some chemical reactions to synthesize their own organic matter from alkanes, hydrogen sulfide and inorganic substances without light energy.
The above is taken from Baidu Encyclopedia's definitions of photoautotrophs and chemoautotrophs. According to their definition, photoautotrophs contain water, inorganic salts and so on. Chemotactic autotrophs also need them. the difference is
Chemotactic autotrophs need chemicals such as alkanes and hydrogen sulfide to provide them with energy.
(This is the main difference. Different substances will be added to different chemoautotrophic biological media to provide energy, as well as some other inorganic salts and vitamins. The specific experiment is analyzed. )
The contrast between autotrophic and heterotrophic is like a green plant, which uses its own organic matter to maintain its life. It is called autotrophic, which is an important feature shared by all kinds of green plants. Self-nutrition; In particular, carbon dioxide or carbonate can be used as the only carbon source and can be metabolized and synthesized by simple inorganic nitrogen-generally green plants, some chemoautotrophic bacteria and protoplasm; Normal metabolism does not need specific external factors.
Heterotrophication cannot directly synthesize inorganic substances into organic substances, which is called heterotrophy. It must absorb ready-made organic substances to maintain a nutritious lifestyle. Heterotrophication includes symbiosis, parasitism and saprophy.
What do you mean by autotrophic and heterotrophic organisms? Autotrophic is a kind of nutrition that can maintain life by using organic matter produced by itself, such as carbon dioxide or carbonate as the only carbon source, which can be synthesized by simple inorganic nitrogen metabolism. It can be divided into chemoautotrophic type and photoautotrophic type. Some bacteria that use the energy obtained by oxidation of inorganic compounds for biosynthesis are chemoautotrophs, such as iron bacteria and sulfur bacteria. Photoautotrophs are organisms that use light energy for biosynthesis, namely plants.
Heterotrophication means that inorganic substances cannot directly synthesize organic substances, and ready-made organic substances must be ingested to maintain a nutritious lifestyle. Most bacteria, all fungi and animals are heterotrophs.
What's the difference between autotrophs and heterotrophs? How to distinguish the organisms that can grow with carbon dioxide as the main carbon source in nature as autotrophs? It mainly includes plants and a few microbial groups. These microorganisms all use carbon dioxide as the main carbon source and inorganic nitride as the nitrogen source. Carbon dioxide is mainly fixed by calvin cycle (i.e. photosynthetic carbon cycle) and is converted into carbohydrates through a series of complicated processes under the condition of energy demand. The energy required for growth varies according to microbial groups and is obtained by photosynthesis or chemical synthesis respectively. The former are purple sulfur bacteria and green sulfur bacteria, while the latter are nitrifying bacteria, sulfur bacteria, iron bacteria and hydrogen bacteria. Autotrophic organisms play an important role in the transformation of natural substances.