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Impaired glycogen synthesis causes metabolic
Impaired glycogen synthesis causes metabolic

... Accepted 3 October 2012 ...
The evolution of photosynthesis.again?
The evolution of photosynthesis.again?

... of reductants; the presence of light; a light-harvesting mechanism to convert the light energy into chemical energy; and carboxylating enzymes. All were present on the early Earth. To provide the evolutionary pressure, organic carbon must be a scarce resource in contrast to inorganic carbon. The pro ...
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adjusting the conditions inside when the outside conditions change
adjusting the conditions inside when the outside conditions change

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Leaf Net Photosynthesis
Leaf Net Photosynthesis

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Light Reactions of Photosynthesis
Light Reactions of Photosynthesis

... processes involved in photosynthesis, while Chapter 5 will deal with the subsequent chemical events involved in carbon fixation from atmospheric carbon dioxide. First, the basic features of the photochemical processes found in plants and their evolutionary origins will be reviewed. The key to the su ...
Sulfonates: novel electron acceptors in
Sulfonates: novel electron acceptors in

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Campbell Biology in Focus (Urry) Chapter 8 Photosynthesis 8.1
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Photosynthesis: CO assimilation and sugar metabolism
Photosynthesis: CO assimilation and sugar metabolism

... Thus, soybean yields only 27% of the energy of corn. What about new energy crops? For Miscanthus, dry wt yields of cellulose is approaching 40,000 lb/acre, or about 10-times more energy than available in starch from corn seed. That is why long-term biofuel solutions from higher plants focus on cellu ...
Click Here for Lecture IV (PowerPoint) "Bacteria"
Click Here for Lecture IV (PowerPoint) "Bacteria"

... organisms that feed on dead organisms or other organic wastes. (1) They recycle the nutrients contained in decomposing organisms. ...
Short-term acclimation of the photosynthetic electron transfer chain
Short-term acclimation of the photosynthetic electron transfer chain

... (the latter being excited by longer wavelengths than the former), as unbalanced excitation of the two photosystems can lead to over-reduction (or over-oxidation) of the electron carriers connecting the two photosystems, leading to possible photooxidative damage to the cell. To achieve ‘photostasis’ ...
20.2 Prokaryotes PowerPoint
20.2 Prokaryotes PowerPoint

... The walls of archaea lack peptidoglycan and their membranes contain different lipids. The DNA sequences of key archaea genes are more like those of eukaryotes than those of bacteria. Based on these observations, scientists have concluded that archaea and eukaryotes are related more closely to each o ...
General Microbiology
General Microbiology

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PCMB Today

... •• Photosynthesis is influenced by quantity (intensity) as well as quality (wavelength) of light. •• During propagation light behaves as wave form (wave theory) and on interaction with matter it behaves as a stream of discrete packets of energy known as photons (corpuscular theory). Thus, showing du ...
Chapter 4 Photosynthesis and Cellular Respiration Worksheets
Chapter 4 Photosynthesis and Cellular Respiration Worksheets

... The chemical energy that organisms need comes from food. Food consists of organic molecules that store energy in their chemical bonds. In terms of obtaining food for energy, there are two types of organisms: autotrophs and heterotrophs. Autotrophs Autotrophs are organisms that make their own food. M ...
Chlorophyll fluorimetry as a method for studying light absorption by
Chlorophyll fluorimetry as a method for studying light absorption by

... normally the rule, however. This may be due to the fact that the value of F0 is proportional to the total content of photosynthetic pigments (carotenoids, chlorophylls a, b, c, etc.), whereas the fraction of chlorophyll a in pigments varies over a wide range, depending both on the taxonomic affiliatio ...
physiological limitations on phytoplankton productivity in the ocean
physiological limitations on phytoplankton productivity in the ocean

... arguments for assaying the photosynthetic response is that the proteins that constitute the photosynthetic machinery or apparatus are highly conserved on both structural and functional levels in all oxygenic photosynthetic organisms (Raven, 1984; Falkowski, 1992), thus allowing inferences to be exte ...
CALVIN CYCLE - MrBrock.com
CALVIN CYCLE - MrBrock.com

... Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings ...
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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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