Chemoautotrophic calvin cycle and carbon dioxide fixation

Hello! Cell biology has.

It only represents a personal opinion, don't spray if you don't like it, thank you.

Here we want to correct the landlord's misconception that not all organisms that ingest carbon dioxide are autotrophs. Because autotrophs are saying that the organism uses natural energy, not bioenergy. Green plants absorb carbon dioxide, then carbon dioxide can only be said to be its "carbon source (here borrowed microbial noun description)", sunlight is its energy**, and sunlight belongs to natural energy, so plants belong to autotrophs, not because carbon dioxide is inorganic, and plants ingest carbon dioxide, so plants are autotrophs.

The landlord said that this kind of bacteria, we don't know what its energy ** is, only know that its carbon source is carbon dioxide, so we can't say that it belongs to autotrophs, unless we know that it uses light energy, photosynthesis, or decomposes pyrite to reduce carbon dioxide to sugar, after giving these conditions, we can determine whether it is an autotroph.

CO2 is an inorganic substance and cannot directly provide energy, that is, the organism needs to obtain additional energy from the outside world, so the organism is not autotrophic. (Only organic carbon sources can provide energy directly, but both inorganic and organic nitrogen sources can provide energy).

Upstairs is completely irresponsible.

Look at the topic clearly. Confiscation occurs in organelles.

1,2 occurs in the nucleus. Not ......... in organelles

Translation occurs in ribosomes. Bu Fan.

Whereas, nitrifying bacteria only have organelle ribosomes.

4,5 Occurs in the cellular-type hail membrane or cytoplasm. Pick B

Only option B can be selected! DNA replication excavation is born in the nucleus of the cell, and nitrifying bacteria belong to the prokaryotic organisms! Only ribosomes are organelles.

There is no nucleus. occurs in nucleoids, judging that it is not an organelle. Radical transcription occurs in the nucleomimetry, one is photosynthesis, the other is aerobic respiration, and nitrifying bacteria are chemosynthesis!

Aerobic respiration cannot be carried out without mitochondria.

The answer is: DNitrifying bacteria are prokaryotes and DNA is the genetic material, so they can replicate DNA.

Transcription, translation of the process of its difference in the formation of protein posture. Nitrifying bacteria use the energy generated by chemosynthesis to produce organic matter, and the process can be generated.

Bacteria and fungi decompose the organic matter in the remains of animals and plants into carbon dioxide, water and inorganic salts, and return them to the inorganic environment for plant absorption and utilization, so bacteria and fungi play an important role in the circulation of carbon dioxide and other substances in nature

So the answer is: water; Inorganic salts

Don't mistake people on the first floor:

Organisms that can grow with carbon dioxide as the main carbon source in nature are collectively called autotrophic organisms. It mainly includes plants and a few microbial groups.

These microorganisms use carbon dioxide as the main carbon source and inorganic nitride as the nitrogen source. Carbon dioxide is mainly fixed through the Calvin cycle (i.e., the photosynthetic carbon cycle), and is converted into carbohydrates through a series of complex processes when energy is needed. The energy required for growth, depending on the microbial group, is obtained through photosynthesis or chemosynthesis, respectively.

The former are such as purple sulfur bacteria (chromatium) and green sulfur bacteria (chlorobium), and the latter are nitrifying bacteria, sulfur bacteria, iron bacteria, hydrogen bacteria, etc. Autotrophic organisms play an important role in the transformation of matter in nature.

Sulfur bacteria can use dissolved sulfur compounds during growth and have no connection to CO2 at all, and nitrifying bacteria are involved in the nitrogen cycle and are not linked to CO2, so they cannot fix CO2

This creature question is incorrect.

Yes! Both of these are chemosynthetic!

One of the cycles of carbon dioxide is the respiration of animals and plants, which is circulated by participating in the respiration and photosynthesis of animals and plants. The other is to participate in the atmospheric cycle through the combustion of fossil fuels.

Both plants and animals have a respiration function, they inhale oxygen and remove carbon dioxide. Plants also have photosynthesis, which inhales carbon dioxide and excretes oxygen.

Carbon dioxide is absorbed by green plants under photosynthesis to synthesize organic matter, and then returned to the atmosphere by four main pathways.

1: After the green plants are eaten by animals, the animals decompose organic matter under the action of respiration, absorb and discharge carbon dioxide into the atmosphere.

2: After the death of green plants or animals, they are decomposed into inorganic matter and carbon dioxide by microorganisms and returned to the atmosphere.

3: Green plants respire carbon dioxide to release back into the atmosphere.

4: Green plants absorb oxygen and water to synthesize organic matter under photosynthesis, and after the plant dies, it becomes coal and oil after a long period of geological action.

Natural gas, or directly collected by humans into fuel, when humans burn them.

Organic matter is burned to produce carbon dioxide that is emitted more than the atmosphere.