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Cyanobacteria carry out photosynthesis using two photosystems as in green plants. Furthermore, other photosynthetic bacteria, like as the purple photosynthetic bacterium Rhodospirillum rubrum which have only a one photosystem reaction center. This can hold out cyclic electron transport, producing a proton gradient and thus synthesizing ATP (cyclic photophosphorylation). In other words, a noncyclic pattern of electron transport can be carried out in that the electrons from the cytochromes pass to NAD+ (rather than NADP as in green plants) to create NADH. The electron donor is, for instance, hydrogen sulfide (H2S) that produces sulfur (S). The Hydrogen gas (H2) and a various of organic compounds can also be used as electron donors by particular photosynthetic bacteria. Because H2O is not used as electron donor, no oxygen is formed.
Define Classifications of carbohydrates based on number of aldehyde? Classification based on the presence of aldehyde or ketone group Carbon atoms Aldos
What are plasmids? What is the importance of plasmids for the recombinant DNA technology? Plasmids are circular fragments of DNA that are accessories to the major bacterial DNA
Explain chemical bonds in basic chemistry? Chemical Bonds : Chemical bonds are forces that join atoms together in a functional unit. There are three types of bonds that can
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why psi g is ignored in water potential of plants?
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Why acquired traits are not directly related to the process of evolution? As acquired traits are not genetically determined, they cannot be passed on to offspring. Thus, they
Placenta - Human Development We had said previous in the unit that in the second week of development a primitive uteroplacental circulation is established. Early in this stage
Define Abbe Condenser of Microscope? It is present beneath the stage, as shown in Figure. It collects and focuses a cone of light on the slide. Its position can be adjusted ver
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