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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.
What is Oogenesis ? The female sex cells, or eggs, are formed in the ovaries, the primary sex organs of the female. The precursor of the egg cells, or oogonia, are formed duri
Explain electrocardiography? What is meant by P-Q interval and S -T interval in electrocardiography? Mention two medical applications of this method.
A decrease in blood plasma levels of calcium will lead to A. an increase in the calcium ion excretion in the urine. B. an increase in the calcium ion absorption from the con
Define Techniques for Detection Hidden Root Canals Three well-angulated periapical films for 3D morphology: o With the cone directed straight on. o Mesiobilque. o And disto
Define Precautions for Testing Quality of Water? 1. Handle the sewage water with care as it may contain enteric pathogens. 2. Sewage and pond water should be shaked before i
Key skills for healthy coping are: - Problem-solving and goal setting skills: Finding a problem and challenges, thinking of alternatives for dealing with them, testing those
Brucellosis Brucellosis among cattle, buffaloes, sheep, goats, pigs produces heavy economic losses due to abortions in late pregnancy, infertility and reduction in productivit
Explain how a water molecule is produced when glucose and fructose undergo a condensation reaction. The glucose molecule releases a hydroxide ion, OH -, and the fructose molec
Commonly adapted different disposal methods by the municipal corporations are: (a) Open dumping (b) Land filling (c) Sanitary land filling pyrolysis (d) Incine
Explain the Disadvantage of Contact Plate Method? These plates are suitable for sampling the surfaces having low contamination, like pre-cleaned and sanitized surfaces. This is
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