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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.
Ecology and Ecosystem The concepts of environment, ecology, ecosystem, energy flow and nutrient cycling in the foundation course on Science and Technology. As you are aware ec
What are typical structures of the seed? What is the endosperm? A typical seed is the composed of the embryo, endosperm and shell. Inside seeds of angiosperms there are one or
Which of the following will lead to a decrease in the amount of oxygen delivered to the body cells in a leg? A. A decrease in hydrogen ion concentration in red blood cells in t
Addition of glycine to the physiological saline A complete motor neuron is removed from a frog and placed in a large volume of normal physiological saline. The neuron is heal
Q. What is the production of the RNA called and what is the enzyme that catalyzes the procedure? The making of the RNA from information contained in the DNA is called transcrip
Removal of a patient's peripheral intravenous catheter resulted in brief bleeding and the loss of a small amount of blood. Which of the following processes occurred during the form
Nutrition As we have said earlier all animals are heterotrophs and require food from the environment. What is this food made up of? If the food of a number of different animal
EPIBOLY - The epibolic movements occur only in the prospective ectodermal blastomeres. In the blastula of frog, migration and rearrangement of microceres over megameres i
What is dichogamy? Dichogamy is the phenomenon of the maturation of female reproductive structures of the plant in a dissimilar period to the maturation of the male reproductiv
1. Identify and compare the methods of somatic gene therapies for ADA deficiency described on pp. 404-405 (Lewis) and OTC deficiency described on pp. 405-406 (Lewis). 2. Compa
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