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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 Asexual Reproduction? Asexual reproduction occurs in prokaryotes through the process of binary fission. Primitive eukaryotes and plants also reproduce by various t
Water Loss - Plant Water Relation Plants lose about 98% of water to the atmosphere by transpiration. Often water loss by transpiration exceeds gain by absorption and results
Explain Risk evaluation Risk evaluation: The risk evaluation involves: A) identification of a food safety problem B) Establishment of a risk profile C) Ranking of
Q. Concerning the number of hosts how are parasites classified? The Parasites that require only one host are called as monoxenous parasites. The Parasites that need more than o
point out the criticism of lamarckism in any six short points.
factors affecting nitrogen balance
Unsaturated fatty acids show different types of isomerisms. We have already learnt about the.concept of isomerism in the last unit. You would realize that fatty acids with s
Common Features of Eye and Limb Development A comparison of the embryonic development of the very much different organs, the eyes and the limb, points to various interesting
Define the Drugs Effects on Excretion? Use of certain drugs can influence the excretion of certain substances. For example, besides their intended increase in sodium excretion,
Q. How are the three major arthropod classes characterized according to the presence of wings? Arachnids and Crustaceans do not have wings. Most insects have wings.
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