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Explain the Dark Adaptation of Vitamin A?
In the early stages of VAD, the individual cannot see objects in dim light. This' phenomenon is used as a criterion for assessment in the dark adaptation test. The subject is either kept in a dark room for some time and asked to identify an object which is dimly illuminated, the intensity of light being increased till the subject is able to see the object (or) he is exposed to bright light for some time, by which the visual purple is bleached. The time required for the rhodopsin to be regenerated is measured by the ability to see a dimly illuminated object. Longer time taken to identify the objects is indicative of variable stages of vitamin A deficiency.
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Enzymes and recombinant DNA technology Recombinant DNA technology, also called as genetic engineering makes use of a variety of enzymes, particularly restriction endonucleases
Phosphate detergent as cause of water pollution
Explain Eicosanoids Eicosanoids are the local hormones formed by body tissues during self-healing responses to stimuli. Eicosanoids are a family of compounds deriv
Antecedent and consequence control Therapy and consultation cannot be effective unless the behaviours to be changed are understood within a particular context. The process of u
Explain Vegetable dehydration It reduces the natural water content below the level critical for the growth of microorganisms (12-15%), without being detrimental to important nu
What are the results of Atrial Septal Defect ? Mortality for ASD closure has approached 0 per cent in most cardiac surgery centers. Late survival of patients who has ASD closu
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Of which substance are microfilaments made? What are the properties of these elements that give motility to cells? Microfilaments are made of actin (a protein). The contractile
How does the vegetal stratification of an ecosystem influence the biological diversity? The vegetal stratification of an ecosystem, as the strata of the Amazon Rainforest, mak
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