To analyze:
The effect of using public gym facilities in increasing the likelihood of S. aureus infection and risks of illness.
Introduction:
The most typical cases of Staphylococcus aureus infection are soft tissue and skin infections. It is a Gram-positive, nonmotile cocci bacteria. Humans' skin, noses, and mucous membranes naturally contain S. aureus, where colonization occurs more frequently than infection. When the cutaneous barrier is compromised or destroyed, skin infection can happen. Any person who has been colonized by the bacteria is susceptible to any subsequent infections, and these infections are severe in cases of diabetics, patients having surgery, and people with AIDS (as their immune system is compromised).
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WHAT IS LIFE? GDE.TO BIOLOGY W/PHYSIO.
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- Researchers are designing several experiments to test the ability of Salmonella bacteria to develop antibiotic resistance. A culture of Salmonella bacteria is exposed to the same concentrations (200 mg/L) of an antibiotic for four days. The table shows the number of isolated resistant bacteria over a four-day period. Which of the following statements best explains these results? Day Number of Resistant Bacteria in the Culture 1 5 2 59 3 677 4 32,456 The bacteria were not affected by the antibiotic. After being exposed to the antibiotic, the bacteria altered the antibiotic. A new species of bacteria emerged after the antibiotics were introduced. Random mutations led some bacteria to be resistant and, over time, they increased in the population.arrow_forwardAntibiotic resistant bacteria have become a major concern for many public health officials. Widespread use of antibiotics has created an evolutionary pressure on infectious bacteria to develop immunity to these medications. The result is an increase in antibiotic resistant microbes, particularly in settings where antibiotics are commonly used, such as hospitals. One strategy public health officials have devised to counteract these infectious microbes is "antibiotic cycling” where specific antibiotics are withdrawn from the market for a period of several years, then reintroduced as another antibiotic is withdrawn. How would this strategy help limit antibiotic resistance? A. It is impossible for a bacterium to maintain resistance to two antibiotics at once B. When a given antibiotic is not in use, it is an evolutionary disadvantage to carry the unneeded gene C. If a specific antibiotic is removed from the market it is possible to substitute with a related antibiotic such as…arrow_forwardWhat new symptoms do you predict if the following exotoxins appeared in a new bacteria? Explain why you expect those symptoms. 1. A lower respiratory (lung) bacteria with the Cholera Toxin 2. A reproductive tract bacteria with the Exfoliative Toxin (ET) 3. A large intestine bacteria with Diptheria Toxinarrow_forward
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