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What is the example of a microevolution?
An example of microevolution is the development of antibiotic resistance in bacteria due to natural selection. Over time, bacteria that are resistant to antibiotics survive and reproduce, leading to a population of bacteria that is predominantly resistant to that antibiotic.
Are all bacterial infections treated the same way?
No. There are different types of bacteria that respond to antibiotics differently. Thankfully, the type of bacteria that are most often responsible for respiratory infections are quite different than the type of bacteria that usually cause urinary tract infections. That's just one example. As a result, the antibiotic that is prescribed for strep throat is different than the antibiotic prescribed for urinary tract infections.
Natural selection example?
A great example would be Antibiotics and Bacteria. When humans create an antibiotic, it wipes out a lot of the bacteria in your body. The ones that that don't get affected by it probably have a resistance to the antibiotic. As those bacteria multiply and grow, the others die out due to the antibioitic. Soon the anti-biotic resistant bacteria will take over the human body, and the humans would have to find another antibiotic to counter the new bacteria. The cycle goes on and on......
What is an example of micro evolution in organisms?
An example of microevolution in organisms is the development of antibiotic resistance in bacteria. Through repeated exposure to antibiotics, bacteria may develop genetic mutations that confer resistance to the drug, allowing those bacteria to survive and reproduce, leading to the evolution of a population that is no longer susceptible to the antibiotic.
What is evolution and can you provide an example to explain the term?
Evolution is the process by which living organisms change and adapt over time through natural selection. An example of evolution is the development of antibiotic resistance in bacteria. When exposed to antibiotics, only the bacteria with genetic mutations that make them resistant survive and reproduce, leading to a population of bacteria that is mostly resistant to the antibiotic.
What is an example of micro evolution?
You are an example of human micro-evolution as the population of humans has changed allele frequency over time. Micro-evolution is just evolution; change over time.
What mutations cause antibiotic resistance in bacteria?
Antibiotics are generally targets a potential life process of pathogen. If a pathogen mutates its protein for example it may be complete different than the previous and may even changes its function slightly different. Thus the antibiotic that are acting on the previous form of a protein acts no more on this newly mutated protein because of its specificity.
What is the chemical name of antibiotic?
There are many different kinds of antibiotics that contain different substances. In simple terms, an antibiotic is a medical substance derived from chemical preparations, organic preparations, etc. that have been proven to kill bacteria, usually each type of antibiotic is targeted at specific types of bacteria since not all antibiotics are effective against all bacteria. The substances usually destroy the organism's cell walls so they can no longer function, or damage the ability of the bacteria to reproduce. They destroy them or inhibit the growth and/or functions of these harmful microorganisms.
Penicillin is an example of what?
Penicillin is an example of an antibiotic, specifically a type of beta-lactam antibiotic. It was the first true antibiotic discovered and is derived from the Penicillium mold. Penicillin is used to treat various bacterial infections by inhibiting the growth of bacteria. Its discovery marked a significant advancement in medical treatment and has saved countless lives since its introduction.
What can bacteria heal?
First, bacteria is already in your body. For example, you have your own ecoli. Second, bacteria is on your skin. It doesn't really serve a purpose there. But....if you have an infection, such as sinus infection, or urinary tract infection, the bacteria in your antibiotic, such as penicillin kills the infection. BUT!! For women, this may cause a yeast infection because the normal bacteria in that area is killed by the medication. Thus, you need a different kind of medication, nonbacterial for that.
Difference between direct and indirect selection of mutant bacteria?
Direct selection occurs when the bacteria are cultured in conditions where only the mutant will grow. For example, if a mutant bacterium has gained resistance to a specific antibiotic, only the mutant will be able to grow on media containing that specific antibiotic. Indirect selection occurs when the bacteria are cultured in conditions where the growth of the mutant is different from the growth of the wild type.
How do scientists study how bacteria are affected by antibiotics?
Laboratory scientists culture a bacterium (one single bacteria) so the bacteria grows to a colony. Scientists create many specimens of colonies for each bacteria. Then they can expose each colony to a different antibiotic medication or new antibiotic to see how the bacteria react to it. They look for sensitivity--meaning, any reaction in the growth of the bacterial colony. The growth may have no change (no sensitivity), slow down, or stop. But even better, ingredients in antibiotics need to disrupt the way bacteria use nutrients, so scientists look to see if the bacteria die when exposed to that specific antibiotic.Different groups or families of antibiotics work best on certain bacteria. At the same time, certain bacteria favor conditions only in certain areas of the body. So the bacteria for a skin infection is different from the bacteria that infects the urinary tract, for example.
