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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 are the principle sources of excessive nitrate and phosphate in rivers and lakes?
Phase (different interference) Contrast microscopy: Living cells are mostly transparent. For viewing under ordinary light microscope, therefore, live cells must be stained wi
Q. What are the Pseudo-yeasts? These are like true yeasts but do not form spores. All the members of this group are particularly unsuitable for fermentation purposes as they p
Q. Clinical Features of gout disease? You may be enjoying good heath but may suddenly get a severe attack. You wake up in the middle of the night, and your big toe feels as if
Define the Factors Causing Underweight - Etiology? There are a number of factors causing underweight. These are: Poor selection of food Physical activity Mothe
Explain Bidirectional Superior vena cavo pulmonary shunt bidirectional glenn "This is a palliative produce where blood from superior vena cava is diverted to the pulmonary arter
Classify phylum porifera with examples
are protozoans primitive to life .
Explain the Chemotherapeautic rinses Chemotherapeautic rinses: The use of 0.12 per cent chlorhexidine has been proven to be of therapeutic significance in maintaining period
organism that can not exist in the presence of oxygen ?
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