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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.
Explain Particle Movement ? Particle Movement : Particles are moved down a concentration gradient by the process of diffusion. Osmosis is simply the diffusion of water acr
A charged particle A exerts a force of 2.39uN to the right on charged particle B when the particles are 12.3 mm apart. Particle B moves straight away from A to make the distance be
Q. For the biological diversity is meiosis or mitosis the more important process? Meiosis is the cell division process that allows the formation of gametes to sexual reproducti
Amphibians is the class of terrestrial vertebrates which lay their eggs (and mate) in water but live on land as adults following the juvenile stage where they live in water and br
THE PHYSIOLOGY OF LACTATION
List the four basic points to be kept in mind when advising food exchange. To develop the food exchange list points to keep in mind are: a) Group similar foods in one group.
Dictyosomes are produced on the Organelles in the plant cells composed of the series of flattened membrane sacs which sort, chemically modify, and package protein srough endoplasm
Pancreas Insulin (β cells) Promotes glucose entry in many cells, and in this way controls carbohydrate metabolism. Glucagon (α cells) Increases synthesis and release of
Population You must be familiar with the term 'population'. It is one of the most talked about issues of this century. It is feared that the rapid growth of the world population
features of phylum platyhelminths
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