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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 Saliva Saliva is the colourless viscous fluid. It helps in swallowing the food by lubricating the food and the neutral pH of saliva prevents the decalcifica
The evolution of human kind can be regarded as the climax of phylogenic history of organisms. In the previous units of this block as well as the previous block we have detailed for
CYTOCHEMISTR Y OF PROTOPLASM - It is supper mixture or mixture of mixtures . 3 4 elements present in it. 1 3 elements are universal. e.g. C, H, O, N, P, K, S,
What phrase best describes oxidation- reduction reaction? A. phosphoryrylation energezing endergounic reactions b. transferring of electrons from one molecule to another c. shar
Q. Pathophysiology of aortic regurgitation? Left ventricle responds to chronic aortic regurgitation by chamber dilatation and an increase in its compliance so that end diastoli
LIPOPROTEINS They are complex biomolecules formed of - T riglycerides, Phospholipids, Cholesterol and Proteins. Lipoproteins are of four types - Chylomicrons
Which type of cell came first in evolution the eukaryotic cell or the prokaryotic cell? Ans) This is an interesting problem of biological evolution. The most accepted hypothesis
It involves the standardization of copper sulphate solution. This is same as done in the previous activity. 1) Pipette accurately 5 ml of Solution A and Solution B in conical f
Explain in detail about working of heart Heart has four chambers. Two upper chambers are called atria. Two muscular lower chambers are called ventricles. The right and left
What are the Sources of Nutrients of Cornea? Sources of Nutrients of Cornea: 1) Oxygen for the endothelium comes from aqueous humour and for epithelium from atmosphere th
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