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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.
whats the difference in respiratory system in mammals,reptilia and amphibian?
Motor nerves : Nerves which carry impulses from brain or spinal cord to effector organs are called efferent or motor nerves. Stimulation of motor nerves makes the muscles to contr
what is respiration
Nature of Stress - Responses of Plants to Stress As mentioned in the preceding section, stress can be considered as any deviation in environmental condition from optimal for t
Why do some trees lose their green color in the autumn? In autumn days become shorter and nights longer therefore there is a reduction of the photosynthesis rate and some plant
classification
EXCRETOR Y ORGANS In protozoa through plasmalemma by diffusion. Contractile vacuole present for osmoregulation (absent in parasitic and marine protozoa). In porifera and
Braiding technique for SP removal: - Three small size files inserted alongside the silver point. - Files twisted together to engage silver point - Withdraw the f
Rifaximin (Xifaxan) An anon-absorbed oral antibiotic, was about as effective as ciprofloxacin for treatment of travelers' diarrhea, mostly caused by E. coli. It is not effecti
Q. What is the function of the immune system? The immune system performs specific defense against agents the antigens that are harmful to the body or foreign. Exogenous anti
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