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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.
To show the direction of sprout growth in seeds Soak pumpkin or other large seeds overnight and fasten three of them on needles as shown in the diagram. Fasten single with the
Absorption of lipids Absorption of lipids is quite different from the absorption of monosaccharides and amino acids. Figure shows the process. The free fatty acids, monoglycer
Protoplasmic Streaming and Tubular Peristaltic Flow Model The first of the above two models involves the well known phenomenon of cytoplasmic streaming in giant algal cells. C
Explain the Psychological Management of eating disorders? All anorexia nervosa or bulimia nervosa patients are resistant to any kind of therapy and hospitalization may be a lif
List the four phases of meiosis I, and briefly explain what occurs during each phase Prophase I: DNA coils into chromosomes, the nucleolus and nuclear envelope disappear, the m
The extracellular surface of the plasma membrane is frequently covered with a protective coat of carbohydrate. A Sugar residue of this carbohydrate coat can be
Q. What is AV Block ? First Degree AV Block At rest commonly disappears with exercise owing to the vagal withdrawal. The development of a prolonged PQ segment after exerc
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Totipotency and Pluripotency In the starting we said that the fertilized egg cell (zygote) has the capacity or potentiality to give rise to all kinds of cell types, like a bl
"Diversity is good" is one of the axioms of conservation biology. However in absentia of historical information, why is noting higher diversity in a system NOT the best way to eval
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