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===Notes on cyanobacteria and photosynthesis=== | ===Notes on cyanobacteria and photosynthesis=== | ||
"Cyanobacteria are a phylum of bacteria that obtain their energy through photosynthesis, and are the only photosynthetic prokaryotes able to produce oxygen. The name "cyanobacteria" comes from the color of the bacteria. Cyanobacteria, which are prokaryotes, are also called "blue-green algae", though the term "algae" in modern usage is restricted to eukaryotes." (Wikipedia) | "Cyanobacteria are a phylum of bacteria that obtain their energy through photosynthesis, and are the only photosynthetic prokaryotes able to produce oxygen. The name "cyanobacteria" comes from the color of the bacteria. Cyanobacteria, which are prokaryotes, are also called "blue-green algae", though the term "algae" in modern usage is restricted to eukaryotes. | ||
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By producing and releasing oxygen (as a byproduct of photosynthesis), cyanobacteria are thought to have converted the early oxygen-poor, reducing atmosphere into an oxidizing one, causing the Great Oxygenation Event and the "rusting of the Earth", which dramatically changed the composition of the Earth's life forms and led to the near-extinction of anaerobic organisms." (''Cyanobacteria'', Wikipedia) | |||
"The Earth is surrounded by a layer of gases which we call the atmosphere. It is the product of photosynthesis, of algae working for millions of years, converting light energy from the sun into air. Evolution’s answer to the atmosphere was the lung. Thus the atmosphere is essential for most living organisms, including people." (''GLOBALE: Infosphere'', https://zkm.de/en/exhibition/2015/09/globale-infosphere) | "The Earth is surrounded by a layer of gases which we call the atmosphere. It is the product of photosynthesis, of algae working for millions of years, converting light energy from the sun into air. Evolution’s answer to the atmosphere was the lung. Thus the atmosphere is essential for most living organisms, including people." (''GLOBALE: Infosphere'', https://zkm.de/en/exhibition/2015/09/globale-infosphere) | ||
Revision as of 10:03, 18 December 2018
Notes on cyanobacteria and photosynthesis
"Cyanobacteria are a phylum of bacteria that obtain their energy through photosynthesis, and are the only photosynthetic prokaryotes able to produce oxygen. The name "cyanobacteria" comes from the color of the bacteria. Cyanobacteria, which are prokaryotes, are also called "blue-green algae", though the term "algae" in modern usage is restricted to eukaryotes. ... By producing and releasing oxygen (as a byproduct of photosynthesis), cyanobacteria are thought to have converted the early oxygen-poor, reducing atmosphere into an oxidizing one, causing the Great Oxygenation Event and the "rusting of the Earth", which dramatically changed the composition of the Earth's life forms and led to the near-extinction of anaerobic organisms." (Cyanobacteria, Wikipedia)
"The Earth is surrounded by a layer of gases which we call the atmosphere. It is the product of photosynthesis, of algae working for millions of years, converting light energy from the sun into air. Evolution’s answer to the atmosphere was the lung. Thus the atmosphere is essential for most living organisms, including people." (GLOBALE: Infosphere, https://zkm.de/en/exhibition/2015/09/globale-infosphere)