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Enzyme Synthesis
Nitrate assimilating system in general is known to show increase in nitrate uptake system and nitrate reductase system in the presence of nitrate. In other words, nitrate assimilatory system is induced by the presence of nitrate. Similarly, cells or organisme assimilating NH3 as nitrogen source show lack of nitrate assimilatory system. Such control of nitrate is called repression control. Thus nitrate is an inducer while ammonia is repressor of nitrate assimilatory system. Red light is known to enhance synthesis of nitrate assimilatory system and this light effect is mediated by well-known photomorphogenic pigment called phytochrome.
Bone Cells Bone cells may be divided into two broad classifications depending on whether they make bone or resorb it. Osteoblasts make bone, while Osteoclasts resorb or take aw
a) Describe with the help of a suitable example for each of the following terms : (i) morphallaxis (ii) epimorphosis and (iii) compensatory regeneration.
characters of phylum protozoa
What is Sports Nutrition? Sports nutrition is a discipline which applies principles derived not only from nutritional but also biochemical and physiological scientific knowled
Why are most ammoniotelic beings aquatic animals? Aquatic animals, like crustaceans, bony fishes and amphibian larvae, usually are ammoniotelic since ammonia diffuses more easi
Myocardial contractility is mostly dependent on the level of sympathetic nerve activity and is also increased by circulating catecholamines and inotropic drugs like dopamine and do
Palliative Procedures i) This consists of enlarging the existing for a men ovale by putting a baloon through the defect (baloon septostomy) so that interatrial mixing of blo
Define Tests for the Presence of Exoenzymatic Activity? Microorganisms require various micro- and macro-nutrients for energy production and growth. These are obtained from the
Jennifer has the "stomach flu" that is going around campus and has been vomiting profusely for the past 24 hours. Not only has she been unable to keep down fluids or food but she h
what is vaso-constriction
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