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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.
The first ever australopithecine fossil was found in 1924 at Taung, South Africa. It was the skull of a 6 year old child showing a mixture of human and ape like features. This a
Pulp Tissue Revascularization : Definition: Is the procedure to re-establish the vitality in non-vital tooth by allowing repair & regeneration of the tissues.
What are brief descriptions of how you could test hypothesis. or how would you know if your hypothesis is testable?
Hypothermia As the blood passes through the oxygenator, hypothermia machine allows the blood to cool to the required temperature. Generally, the temperature is brought dow
If a lipid bilayer does not form in a test tube of phospholipids in a liquid solvent and instead the heads join together in a circular pattern, the most likely explanation is: a
Which of the following statements is correct? A. Hemoglobin binds O2 cooperatively, while myoglobin does not. B. Myoglobin binds O2 cooperatively, while hemoglobin does not.
Define the Sun and Solar Drying Method? The make use of solar energy to preserve the food items is mainly the oldest form of food reservation and is still practiced today for f
The breakdown of ATP releases energy, which is utilized by other reactions that require energy. Identify other examples where inventions have utilized a similar principle, where en
Q. What are the three major types of passive transport? The three main types of passive transport are simple osmosis, diffusion and facilitated diffusion.
The Cori cycle a) Pyruvate formed from glucose is converted to lactate by lactate dehydrogenase in the muscle cell. b) Lactate is released into the blood and taken up b
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