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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.
(1) From the above gateway reaction (entry clone and destination vector); (i) which plasmid will be selected for when transformed into E.coli (A or B) and why? (ii) which an
Q. How many cellular nuclei does the pollen tube of angiosperms have? What is ploidy of each of these nuclei? The pollen tube explicitly the mature male gametophyte of angiospe
Which two structures does the trachea lead to in the lungs?
Why does the ingestion of vegetable fibers improve the bowel habit in people that suffer from hard stools? Some types of plant fibers are not absorbed by the intestine but play
Which of the following are eukaryotic? Bacteria protists fungi animals' archaea plants and animals only all of the choices are eukaryotic.
EXCRETION IN PRAWN- A pair of antennary gland or green gland and a median renal sac present. Green glands lie at the base of antennae & open out by renal aperture.
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Define a liquid diet A liquid diet is the one which having of foods that can be served in liquid or strained forms at room temperature. These are usually prescribed after certa
What is the significance of Axial skeleton? The bones which make up skeleton of the main body axis of vertebrates. It comprise the cranium, vertebral column, and rib cages, How
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