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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.
What is Chromosome Mapping in phenotypic trait? Chromosome Mapping : By noting how often a gene segment associated with a specific phenotypic trait crossed over during meios
why frog respire through skin
V apour Theory (i) It was proposed by a Greek philosopher Pythagoras in 500 B.C. (ii) Each organ of an animal body emitted some kind of vapour and that a ne
WORL D CONSERVATION STRATEGY PROPOSES THE FOLLOWING STEPS - 1. Preservation of critical habitats. 2. Protection of wild life in situ (in natural habitats) as we
Approaches to Neuropsychological Assessment Probably the most useful model of neuropsychological interpretation is described in Reitan and Wolfson's (1993) four approaches to a
Q. Explain Cardiac calcification? Pericardial Calcium is most dense in the atrioventricular grooves and is seen as thick oblique circles or arcs of calcification. From th
Describe the common operations performed in paediatric cardiac surgery 1) Closed Heart Surgery: Surgery on Heart or Great Vessels done without using the Heart-Lung machine.
Q. Determine ST-Segment Elevation? Ans. Exercise induced ST-segment elevation is common in subjects with post MI stress tests in leads where Q-waves are present. It has be
State about the importance of Potassium Potassium is the third major element required for plant growth, generally absorbed as K + ion. In soil 95 to 99 percent of potassium e
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