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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.
Categories of Air Pollutants From the above list you can see that the air pollutants can be broadly classified into the following two categories: Primary Pollutants
PLANE OF CLEAVAGE - Each cleavage of the division zygote is marked by a cleavage furrow. Usually the first cleavage furrow is vertical & passes through the main axis of t
classification on protozoans
Q. Special situations of Pulmonary Embolism? The CXR is often abnormal in pulmonary embolism. Atelectasis and other focal pulmonary parenchymal abnormalities are the most commo
How are human voices created? Human voice is formed with the help of muscles in the neck and the vocal cords. The tighter the vocal cords the higher the pitch of voice. This is
What is the difference between essential and natural amino acids? Ans) Significant amino acids are those that the organism is not able to synthesize and that require to be inges
Which of the following serves as an effector, or part of an effector, that functions in a negative feedback system? A. 1,25-dihydroxyvitamin D Receptors located intracellularly
Organism:- Yeast Advantages Large size, hence separation from the culture medium is easy. As the pH of the growth is towards acidic side, high amount of lysine is prod
Packs, pouches, and cassettes are sometimes wet after completing the sterilization process. This is a problem usually associated with the use of paper or paper/ plastic wraps in t
What is an argument that shows that the emergence of photosynthetic beings was crucial for life to reach the marine surface and later the dry land? The Ultraviolet radiation fr
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