Biology, 19.08.2019 01:30 nathrontheking
Staph infections, caused by the bacterium staphylococcus aureus, are increasing in frequency and are more difficult to treat with antibiotics. many staph infections are now caused by mrsa, and methicillin-resistant strain of s. aureus. what explains the more widespread phenomenon of mrsa prevalence in staph infections?
a) vaccines for mrsa have become not effective because of changes to human immune systems.
b) the presence of antibiotics induced the bacterial genomes to mutate and develop resistance to the drug.
c) decreased hospital sanitation practices to save money have resulted in increased presence of resistant staph infections.
d) selective pressures by excessive antibiotic use have increased the frequency of resistant strains of s. aureus over the last few decades.
Answers: 1
Biology, 21.06.2019 17:00, HernanJe6
Which of the following statements is true of enzymes? a)they dont provide an active site for substrates to bind in a reaction b)they act on a specific type of substrate in a reaction c)they unusable after a reaction d)they change shape after a reaction
Answers: 1
Biology, 22.06.2019 13:00, mawawakaiii
Land conservation is a worldwide priority. there are several methods to prevent the loss of land due to a variety of reasons. which method is not a way to conserve land? a) sea walls b) rainwater harvesting c) limits on clear cuts of forests d) cut and burn methods of clearing land
Answers: 1
Staph infections, caused by the bacterium staphylococcus aureus, are increasing in frequency and are...
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