Algae photosynthetic

Thurnauer M C and Norris J R 1980 An electron spin echo phase shift observed in photosynthetic algae. Possible evidence for dynamic radical pair interactions Chem. Phys. Lett. 76 557-61... 

Microbiological procedures which exploit the ability of bacteria and photosynthetic algae to incorporate exogenous labeled precursors such as 14CO2, SO%, and 32pQ3- [ can be used to label complex molecules in cells such as proteins (qv) and nucleic acids (qv), which are then processed to give labeled constituents such as uniformly labeled C-amino acids, C-nucleotides, C-fipids, LS-amino acids, etc (8). 

Essentially all organic matter in the ocean is ultimately derived from inorganic starting materials (nutrients) converted by photosynthetic algae into biomass. A generalized model for the production of plankton biomass from nutrients in seawater was presented by Redfield, Ketchum and Richards (1963). The schematic "RKR" equation is given below ... 

The two hydrogen production routes involving either photosynthetic algae/ cyanobacteria or fermentation bacteria converting earlier produced organic residues pose different challenges to a profitable industrial scale-up of the current laboratory-scale experimental work. 

CO2 removal by a bioreactor with photosynthetic algae using solarcollecting and light-diffusing optical devices ... 

Phytoplankton Single-celled photosynthetic algae Podzolization A process commonly occurring in humid-temperate environments and tropical regions. The process involves the participation of soluble organic compounds that complex Fe, Al, and other metals and transport them to depth, where they are arrested. The result is a soil that displays a dramatic segregation of horizons... 

Finally, and most importantly, the two chloroplast photosystems differ significantly in their functions only PSII splits water to form oxygen, whereas only PSI transfers electrons to the final electron acceptor, NADP". Photosynthesis in chloroplasts can follow a linear or cyclic pathway, again like green and purple bacteria. The linear pathway, which we discuss first, can support carbon fixation as well as ATP synthesis. In contrast, the cyclic pathway supports only ATP synthesis and generates no reduced NADPH for use in carbon fixation. Photosynthetic algae and cyanobacteria contain two photosystems analogous to those in chloroplasts. 

When photosynthetic algae are exposed to a brief pulse of C-labeled CO2 and the cells are then quickly disrupted, 3-phosphoglycerate is radiolabeled most rapidly, and all the... 

Oxygen is the most abundant element on Earth s surface, occurring in air as the free element, combined with hydrogen in water, and combined in innumerable oxides, silicates, carbonates, and phosphates. Virtually all O2 has a biological origin, having been formed for billions of years by photosynthetic algae and multicellular plants in an overall equation that looks simple but involves many steps ... 

The oxidized forms of carbon available for photosynthesis are the carbon dioxide in the atmosphere and the soluble bicarbonate and carbonate in the waters of the earth s surface. On land, seed plants are the principal agents of photosynthesis accompanied by a minor contribution by the algae and cyanobacteria. In the oceans, the unicellular photosynthetic algae play the most important role in photosynthesis. It has been estimated that the total animal fixation of carbon in the oceans amounts to approximately 1.2 x 10 tons, whereas that on the land is about 1.6 x 10 tons [11]. 

Cyanobacteria and red algae are photosynthetic algae that live more than a meter underwater, where little blue or red light reaches them. Explain how they can carry out photosynthesis. 

Further variation of lipid metabolism has been observed as the dependence on the environmental pollution by heavy metals (Cu, Cd, and Pb), herbicides, and also in the consequence of manganese deficiency in a cultivation medium for photosynthetic algae (Constantopoulos, 1970). 

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