Which Of These Statements Best Describes The Phenomenon Of Antibiotic Resistance In Bacteria?

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Which statement best describes the phenomenon of antibiotic resistance in bacteria quizlet?

51 Which statement best describes the phenomenon of antibiotic resistance in bacteria? Resistance can be partial or total, and resistance to each antibiotic is a separate trait. When a type of bacteria is resistant to antibiotics, it’s resistant to all antibiotics.

What causes antibiotic resistance in bacteria?

Bacteria develop resistance mechanisms by using instructions provided by their DNA. Often, resistance genes are found within plasmids, small pieces of DNA that carry genetic instructions from one germ to another. This means that some bacteria can share their DNA and make other germs become resistant.

What is meant by antibiotic-resistant bacteria?

Antibiotic resistance happens when germs like bacteria and fungi develop the ability to defeat the drugs designed to kill them. That means the germs are not killed and continue to grow. Infections caused by antibiotic – resistant germs are difficult, and sometimes impossible, to treat.

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Which process best explains how antibiotic resistance in bacteria can occur?

Antibiotic resistance is a consequence of evolution via natural selection. The antibiotic action is an environmental pressure; those bacteria which have a mutation allowing them to survive will live on to reproduce. They will then pass this trait to their offspring, which will be a fully resistant generation.

Which statement best describes how bacterial resistance to antibiotics demonstrates natural selection?

Which statement below best describes how bacterial resistance to antibiotics demonstrates natural selection? A. The bacteria are able to mutate when they are exposed to antibiotics, allowing the next generation of bacteria cells to have immunity from the antibiotics.

How does antibiotic resistance occur quizlet?

What causes antibiotic resistance? Bacteria develop random mutations in their DNA which can lead to changes in their characteristics. What can a mutation in a bacteria’s DNA lead to? Antibiotic resistant strains forming as a gene for antibiotic resistance.

What are examples of antibiotic resistance?

Important examples are:

  • methicillin- resistant Staphylococcus aureus (MRSA)
  • vancomycin- resistant Enterococcus (VRE)
  • multi- drug – resistant Mycobacterium tuberculosis (MDR-TB)
  • carbapenem- resistant Enterobacteriaceae (CRE) gut bacteria.

Which antibiotics are associated with increased development of resistance?

Methicillin- resistant Staphylococcus aureus (MRSA) MRSA has become resistant to common antibiotics such as beta-lactams, including methicillin, amoxicillin, penicillin, nafcillin, oxacillin, and cephalosporins.

How is antibiotic resistance treated?

If you have an infection that is antibiotic – resistant, your healthcare provider may or may not have other treatment options. Taking unneeded antibiotics promotes the growth of resistant bacteria. Practice good hygiene. It helps prevent the spread of infections that are resistant to antibiotics.

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How can you protect yourself from antibiotic resistant bacteria?

No one can completely avoid getting an infection, but there are steps you can take to reduce your risk.

  1. Know Your Risk, Ask Questions, and Take Care.
  2. Clean Your Hands.
  3. Get Vaccinated.
  4. Be Aware of Changes in Your Health.
  5. Use Antibiotics Appropriately.
  6. Practice Healthy Habits Around Animals.
  7. Prepare Food Safely.

How do you treat multidrug resistant bacteria?

How are MDROs treated? MDROs are hard to treat because they are resistant to many common antibiotics. But, a few antibiotics can be used. Your doctor will decide which antibiotics to prescribe based on the germ and location of the infection.

How can we prevent antibiotic resistant bacteria?

There are many ways that drug- resistant infections can be prevented: immunization, safe food preparation, handwashing, and using antibiotics as directed and only when necessary. In addition, preventing infections also prevents the spread of resistant bacteria.

Is antibiotic resistance an example of natural selection?

Antibiotic resistance is a stunning example of evolution by natural selection. Bacteria with traits that allow them to survive the onslaught of drugs can thrive, re-ignite infections, and launch to new hosts on a cough.

How does Staphylococcus aureus develop antibiotic resistance?

Staphylococcus aureus is naturally susceptible to virtually every antibiotic that has ever been developed. Resistance is often acquired by horizontal transfer to genes from outside sources, although chromosomal mutation and antibiotic selection are also important.

How does mutation cause antibiotic resistance?

Mutations can provide resistance to antibiotics If we were to treat the bacterial population with that specific antibiotic, only the resistant bacteria will be able to multiply; the antibiotic selects for them. These bacteria can now increase in numbers and the end result is a population of mainly resistant bacteria.

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