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It is a broad spectrum antibiotic that is particularly successful in treating Rickettsial infections.
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∙ 14y ago
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What is the definition of competent cells and how it can help to make a transformation more efficient during the cloning of desired gene?
Generally most of the bacteria have the ability to take up DNA which is present freely in the environment. This is called Competence. It is genetically acquired. But some cells do not exhibit natural competence and they are treated with a suitable chemical like CaCl2 to make their cell wall relatively permeable to DNA. We can make any cell competent in vitro and introduce our desired gene which is taken up by the competent cell. To test the efficiency of our treatment, we may introduce a marker gene like gene for antibiotic resistance such as Tetracyclin onto the desired gene and grow the treated cells on Tetracyclin medium so that only the cells that have taken up the DNA survive.
Does antibiotics kill bacteria?
they get attack by white blood cells. then they outnumbered the white blood cells. then antibiotics finished then off. they go in and destroy the bacteria as it is a gun. thank u for reading!
Can antibiotics cause resistance in bacteria?
A simple way to explain it is:When you have an infection and take antibiotics for it, the weaker bacteria are killed first, with the stronger ones surviving, or taking longer to destroy. So when you don't take the full round of antibiotics, the stronger bacteria are the ones left in your body, and they are the ones that will continue to multiply, resulting in a bacteria resistant to the antibiotic. This is why you should always take the full prescribed course of antibiotics.Also, when antibiotics are prescribed, the body's natural defense system (the good bacteria) are destroyed along with the bad bacteria. This is why you should always eat yogurt with active cultures or drink buttermilk while on antibiotics - the active cultures put the "good" bacteria back in the body.
