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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 are the main characteristics of the bryophytes? Bryophytes are nonvascular plants, i.e., they do not have conductive tissues and they perform transport of water and nutrie
what are the general characters of amobeo
Which of the following statements concerning the inheritance of a dominant trait is true? Every affected person must have at least one affected parent. The trait is observed to ski
What is the significance of proteins for living beings? Proteins play a fundamental role in nearly all biological processes. Because of their diversity they can assume many dif
Chromosomes are the condensed, fibrillar, self- replicating genetic structures of cells containing the cellular DNA which bears in its nucleotide sequence the linear array of gene
Subsequently many such fossils were known from France, Italy and middle East. All such fossils exhibited reduced brow ridges, steep forehead, high rounded cranial vault, short face
Define Clinical Trials for Changing nutrient requirements with age? Several clinical trials provide evidence of changing nutrient requirements with age. The metabolic demand fo
Do beings of the class Reptilia perform gas exchange in the same way amphibians do? These beings do not have permeable skin so they do not make cutaneous respiration such as a
The nitrogenase complex is extremely sensitive to inactivation by O2, so the enzyme must be protected from this reactive substance. During the root nodules of legumi
Q. Important Herbaria? The herbarium is a place where dried and mounted specimens are stored according to any recognised system of classification. Special attention is paid tow
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