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Photoautotrophic
Photoautotrophic organisms synthesize food with the help of light energy of the sun, carbon dioxide and water. The process of synthesis of food in this method is called photosynthesis, which will be dealt later in this chapter. For example: cyanobacteria (blue-green bacteria, prokaryotes)..
Photoautotrophic organisms synthesize food with the help of light energy of the sun, carbon dioxide and water. The process of synthesis of food in this method is called photosynthesis, which will be dealt later in this chapter. For example: cyanobacteria (blue-green bacteria, prokaryotes)..Summary
>Nitrogen fixation is primarily by symbiotic bacteria - Rhizobium or by free living cyanobacteria. For nitrogen fixation, a large amount of energy is derived from ATP molecules. The dinitrogen molecule is reduced to ammonia with the help of enzyme nitrogenase. The nitrifying bacteria conv..
Aerobic Photoautotrophs
They evolved 3300 to 3500 million years ago. They were like present day cyanobacteria and could release O 2 into the atmosphere because they used water as the reagent. Thus, the whole reducing atmosphere changed to an oxidising atmosphere. Autotrophs are said to have arisen mu..
They evolved 3300 to 3500 million years ago. They were like present day cyanobacteria and could release O 2 into the atmosphere because they used water as the reagent. Thus, the whole reducing atmosphere changed to an oxidising atmosphere. Autotrophs are said to have arisen mu..See what our Users say :
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