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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.
Define Biodiversity and ecosystem stability? Human's have transformed ecosystems all through the world, frequently replacing diverse natural ecosystems with ecosystems which ar
Chemical energy of matter : As is obvious from the above account living cells obtain energy by breaking C-C and C-H bonds of organic matter under the process of catabol
Reparative Regeneration This type of regeneration, as the name suggests, involves repair of a wound or replacement of a body part removed intentionally or because of injury.
How is the respiratory system in aquatic molluscs divided? What adaptive respiratory structure do terrestrial molluscs present? Aquatic molluscs oxygenate their blood through g
general characteristic of phylum protozoa
Explain Research dietitians Research dietitians work in the field of normal or therapeutic nutrition Research dietitians seek ways to improve the nutrition of both healthy
Gills - Respiration Gills are highly vascularised extensions of gas exchange membranes. The simple type may be extension of the body surface as in sea-slugs, sea stars and ma
Pathology: This concerned with the identification of different diseases, causative organs, their prevention and control methods. Pathology is a kind of study or diagnosis of diseas
What is the positive atom referred to in ionic bonds and write a monovalent and divalent example.
Pollen Tube Structure The pollen tube in the stigma is filled with cytoplasm containing numerous mitochondria and dictyosomes. The number of dictyosome cisternae is reduced i
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