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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.
Celia is a nurse in a geriatric ward. She noticed that older persons in her care are having problems sleeping at night. She decided to introduce non-pharmocologic ways of relaxat
Q. Foods for Growth in microorganisms? Microorganisms differ in their ability to use various nitrogenous compounds as a source of nitrogen for growth. The primary nitrogen sour
What is Dip Stick Test It is a rapid method of detection of Ketone bodies which you can perform easily. Plastic strips impregnated with a buffered mixture of sodium nitropru
Q. What is Sulphonylureas? Sulphonylureas: Tolbutarnide is the mildest and its effect remains for 8 hours hence 2-3 doses need to be taken. Another drug chlorpropamide needs on
Explain the Lactose Fermenters and Non lactose Fermenters 1) Lactose Fermenters - These produce acid on lactose fermentation, which results in red colouration on bacterial colo
Explain the major classes of lipids The major classes of lipids are simple lipids (acylglycerols and waxes); Compound lipids (glycerophospholipids); Derived lipids (compounds t
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Why do most of plants present opposite phyllotaxis? The Phyllotaxis is the way that leaves are arranged on shoots. Most of plants have opposite phyllotaxis that (alternating in
Japanese encephalitis Japanese encephalitis (JE) is a mosquito-borne encephalitis and is caused by flavivirus belonged to the family Flaviviridae. It is a zoonotic disease, i
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
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