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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.
Mammalian Lungs - Respiration In this we will study mainly mammalian lungs as it is the best representative of a respiratory surface adapted for terrestrial respiration. For t
Explain the Absorption, Storage and Elimination of Folate? Folic acid is readily absorbed from the small intestines through the portal vein and passed onto the tissues throug
Explain the Advantage of Sponge Method? Advantage: The method is suitable when the surface to be swabbed is large or low incidence of microbes in the environment.
What is a pH meter? A pH meter is a device used for measuring. pH of any unknown solution. It is composed of: a) A reference electrode b) Glass electrode whose potential
What is Microtubules? Microtubules are the largest intracellular fibers, with a diameter of about 25 nm (2.5 x 10-8 meters). They consist of hollow fibers composed of a protein
Few sentences about embryo
Q. What do you mean by Cytotaxonomu and biosustematics? Towards the end of the 19 th century and in the early years of the 20th century, botanists were faced with a problem of
habitat, habit, cell wall chemistry, reason why cell wall like this of Archaebacteria , eubacteria,fungi,algae,bryophytes ,pteridophyes, gymnosperms , angiosperms..
Response to Cold - Responses of Plants to Stress Let us first see what happen to a plant when it is exposed to a cold climate with temperatures below 0°C. If the temperature i
What are the typical vegetation and the typical fauna of the tropical forests? In the vegetation of the tropical forests broadleaf evergreen trees predominate. On the top of th
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