History, 23.09.2019 07:30 alex43079

From these data, you propose a model of how s. aureus changes from a harmless bacterium on the skin to a serious pathogen inside a wound.

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Staph, as well as other pathogens, may change genetically by means of plasmids. Plasmids are DNA molecules which carries a rich diversity of genes that benefit the host cell. In this specific case, the host cell is the Staph bacteium. Among other things, plasmids carry antibiotic resistance genes.

To illustrate how an ordinary Staph aureus bacterium can evolve into a methicillin-resistant bacterium, let's use the patient who doesn't finish an antibiotic prescription of penicillin. The Staph is weakened but not killed. Bacterial plasmids work quickly to produce genes that make the bacteria resistant to the drug. These parent bacteria replicate and pass on the plasmids, along with the DNA they contain, to the "daughter" cells. Voila! Methicillin-resistant Staphylococcus aureus! With the new DNA in place, each subsequent generation of Staph will also be resistant. But do not think for one moment that MRSA is otherwise somehow different from Staphylococcus aureus. MRSA IS Staph. Staph with an added feature.

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i am pretty sure the awsers is d.

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i'm not exactly sure if you should be referring to your textbook or other resources for this because they might want it verbatim, but here we go.

7: when martin luther king jr. (january 15, 1929 - april 4, 1968) was growing up, although slavery had been abolished, there was still open segregation in practice, i.e., white only restrooms and coloured restrooms. one famous incident was when on december 1, 1955, rosa parks refused to give up her seat to a white man on a bus. because of this, she was arrested, but eventually freed.

8: he was a man who spoke out to the entire nation about peace and equality, so therefore doing something for your community, or nation, is a way of honoring him because he did the same. everyone learns about martin luther king jr. he is famous in history books, most especially for his “i have a dream” speech that inspired millions worldwide. he spoke to the entire nation about freedom, equality, and peace for all. he was participation in his community and doing what was right for him and all his community. participating in service projects is a great idea to honor his dream and his memory. even thought it’s not was comes first to mind when thinking about community service projects, it is an amazing way to honor an amazing man who changed the future for the better.

hope this ! : )

Ineed on number 6 and 7 this is my social studies homework assignment

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From these data, you propose a model of how s. aureus changes from a harmless bacterium on the skin...

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