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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.
How are secondary cell walls different from primary cell walls? Primary cell walls are assembled on the surface of the plasma membrane whereas the cell is growing. They can gro
Explain the Selective Media - Culture Media? It is used to select specific groups of bacteria by favouring the growth of desired bacteria and inhibiting the growth of undesired
1. Discuss how nursing has changed over the last two (2) decades. 2. Review and summarise the philosophy of your enrolled nurse course and its relevance to your clinical practic
General guidelines for use of BONE GRAFTING 1. The surgical site should be prepared, that is it should be free of granulation tissue. 2. For autogenous grafts- the donor sit
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What is the name of enzyme in gastric juice?
What do you mean by Pelvic Girdle? Bones in vertebrates which connect the appendages on left and right side of the posterior appendicular skeleton to each other. Pelvic girdles
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Where may bacteria be found? Expose sterile bacteria dishes to as lots of the following conditions as you can. Label the dishes and set them away in a warm, dark place for a so
Embryo - Pollen Biology The suspensor cells of young embryos of Tropaeolum majus show that the activity of acid phosphatase increases from micropylar to chalazal pole. The con
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