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Introduction to Biogeochemical Cycles
Introduction to Biogeochemical Cycles

... 2. Frankia form nitrogen-fixing root nodules (sometimes called actinorhizae) with several woody plants of different families, such as alder 3. Cyanobacteria often live as free-living organisms in pioneer habitats such as desert soils (see cyanobacteria) or as symbionts with lichens in other pioneer ...
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... 8b) What do most plants do on hot, dry days? Why? What is the “tradeoff” of doing this? ...
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... Plants produce oxygen when light shines on the leaves. Plants produce starch in their leaves when light shines on them. Leaves are adapted to carry out photosynthesis. Leaves are green because they contain the green pigment chlorophyll, which absorbs energy from light. Leaves have tiny holes in thei ...
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... understand, because the idea of producing a heavy plant from air and water is not intuitive. – Converting the matter in air and water to plants requires a great deal of energy. ...
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... Occurs in stroma of chloroplast  Does not require dark ( or light )  Needs NADPH and ATP from light reactions  Uses CO2  Generates glycerol 3 phosphate (1/2 of a glucose…. aka PGAl ) ...
PowerPoint
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... Archaea (Archaebacteria) are prokaryotes that differ from other prokaryotes and from eukaryotes in the following manner: ◦ Cell walls only contain various polysaccharides, not peptidoglycans (as in bacteria), cellulose (as in plants) or chitin (as in fungi) ◦ The phospholipids of the plasma membrane ...
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... • Have existed on this planet for nearly 400 million years. • Without plants, life on Earth would not exist as we know it. • Plants provide many great resources to planet Earth, including sources of food, oxygen, and habitat for other organisms. • Plants are known as producers, because they make or ...
Photosynthesis - Jocha
Photosynthesis - Jocha

...  DOES NOT need light to happen  Takes place in the stroma (matrix) of the chloroplast  Uses the products of the light reactions to make sugar from carbon dioxide ...
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Cyanobacteria



Cyanobacteria /saɪˌænoʊbækˈtɪəriə/, also known as Cyanophyta, is a phylum of bacteria that obtain their energy through photosynthesis. The name ""cyanobacteria"" comes from the color of the bacteria (Greek: κυανός (kyanós) = blue). They are often called blue-green algae (but some consider that name a misnomer, as cyanobacteria are prokaryotic and algae should be eukaryotic, although other definitions of algae encompass prokaryotic organisms).By producing gaseous oxygen as a byproduct of photosynthesis, cyanobacteria are thought to have converted the early reducing atmosphere into an oxidizing one, causing the ""rusting of the Earth"" and causing the Great Oxygenation Event, dramatically changing the composition of life forms on Earth by stimulating biodiversity and leading to the near-extinction of anaerobic organisms (that is, oxygen-intolerant). Symbiogenesis argues that the chloroplasts found in plants and eukaryotic algae evolved from cyanobacterial ancestors via endosymbiosis. Cyanobacteria are arguably the most successful group of microorganisms on earth. They are the most genetically diverse; they occupy a broad range of habitats across all latitudes, widespread in freshwater, marine, and terrestrial ecosystems, and they are found in the most extreme niches such as hot springs, salt works, and hypersaline bays. Photoautotrophic, oxygen-producing cyanobacteria created the conditions in the planet's early atmosphere that directed the evolution of aerobic metabolism and eukaryotic photosynthesis. Cyanobacteria fulfill vital ecological functions in the world's oceans, being important contributors to global carbon and nitrogen budgets.– Stewart and Falconer
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