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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.
Q. Why do ribosomes move along mRNA during translation? During translation the ribosome always exposes two mRNA codons to be translated by moving along the mRNA, when a peptide
Phylum Ascomycetes 1) Sexual reproduction is by conjugation and is followed by the formation of ascospores inside a sac called ascus. 2) The asci may be grouped together to
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Explain Water Holding or Hydration Capacity (WHC) and Viscosity? WHC refers to the 'ability of fibre to bind water', just as dry sponge does when soaked in water. WHC of the fi
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A solution was prepared by dissolving 25g NaOH powder in 100 ml water. Using not more than 15 ml water, devise a series of dilutions that will give a concentration of 5mg/ml NaOH.
Insulin Syringes Syringes for insulin are designed for standard U-100 insulin. 1 ml of insulin has 100 standard units of insulin. Syringe has markings in insulin units it helps
Eyes Check for conjuctivitis, epicanthal folds, and observe the inner canthus of both eyes. Look for squint, nystagmus, trauma, lacrimal duct obstruction, corneal opacity, c
Orientation to the Paediatric Unit When the family arrives at the pediatric unit, they should be shown the room where their child will stay and the toilet facilities, the fan
Explain antimicrobial susceptibility All isolates of M. tuberculosis should be tested for antimicrobial susceptibility. Initial therapy for most patients with active TB should
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