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The lac operon is an brilliant example of negative control or negative regulation of gene expression in which they bound repressor stops transcription of the structural genes. The Positive control or positive regulation of gene expression is when the regulatory protein binds to enhances and DNA the rate of transcription. In that case the regulatory protein is called as an activator. The CAP or CRP included in regulating the lac operon is a good instance of an activator. Thus the lac operon is subject to both positive and negative control.
Write down all the four quantum numbers of the electron in the outermost shell of rubidium (At. no.= 37) atom. a) What type of hybridization is associated with N in NH 3 ? b
Q. What are the allosteric enzymes? Allosteric enzymes are those that have in excess of one activation center and to which other substances, called allosteric regulators, bind.
Explain why it is essential that muscle cells, during anaerobic respiration, convert pyruvic acid (pyruvate) into lactic acid, even though the conversion results in an accumulation
Q. Echinoderm identity card. How are echinoderms characterized according to examples of representing beings, basic morphology, type of symmetry, germ layers and coelom, respiratory
Explain the Community ecology of disease? Ebola, hantavirus, bubonic plague, Lyme disease, West Nile virus, rinderpest, and canine distemper virus are all instances of diseases
advantages of cuticle of anthropodes
What is the type of genetic inheritance that determines the ABO blood group system? What are the relations of dominance among the involved alleles? The inheritance of the ABO b
Intracellular digestion, or cellular digestion, is the breaking in the interior of the cell of big molecules coming from outside or even from the own cell metabolism into smaller m
S c inti g r ap h y or nuclear medicine: Scintigraphy was introduced in veterinary medicine in 1970s. It is highly sensitive and can detect bone dama
Extruded Starch Cereal products, that are prepared by pumping cereals through a small opening for instance, pasta, Ready-to-eat cereals etc.
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