Describe natural antibiotic resistance in Gram-negative bacteria and how people fuel the fire of antibiotic resistance.

Expert Solution

ans

Gram-negative bacteria acquire antibiotic resistance as a result of natural selection. The Genetic variations which cause mutations help their survival in the presence of antimicrobial agents causing an.tibiotic resistance

The Gram-negative outer membrane is an important barrier that provides protection against antibiotics

Mechanisms of Gram-negative antibiotic resistance are

acquisition of enzymes that modify or destroy antibiotics like aminoglycoside-modifying enzymes and and carbapenemases

acquisition of enzymes that alter bacterial antibiotic targets.

acquisition of mutations in bacterial targets such as topoisomerases, ribosomes.

Gram-negative bacteria can acquire resistance to important classes of antibiotics

the ways people fuel the antibiotic resistance are

Over-prescription of antibiotics
Absence of new antibiotics discovery
Overuse of antibiotics in livestock and aquaculture.
Patients not completing the entire medicine course which allows bacteria to develop resistance to drugs.
Poor infection control.
improper hygiene and sanitation

gladiator answered 2 years ago

Choose one antibiotic that you would expect to show different effects on Gram-positive and Gram-negative bacteria....

Choose one antibiotic that you would expect to show different effects on Gram-positive and Gram-negative bacteria. Which bacterium is more susceptible? Why do you think this might be the case?

We are fighting what seems to be a losing battle against antibiotic-resistant Gram negative bacteria, such...

We are fighting what seems to be a losing battle against antibiotic-resistant Gram negative bacteria, such as “beta-lactamase-producing Enterobacteriaeceae” (BLPE). BLPE seemed to arise all of a sudden in response to the common use of penicillin to treat infections caused by Enterobacteriaeceae. A. BLPE are resistant to all of the following antibiotics. For each, state the antibiotic’s mode of action, and explain the most likely resistance mechanism. Ceftriaxone Tetracycline Aminoglycosides Vancomycin B. If we only overused Penicillin, how could that...

Describe how antibacterial soaps are among several factors that contribute to the rise of antibiotic-resistance bacteria.

1. Based on this lab, describe how antibiotic resistance in bacteria may have evolved including the...

1. Based on this lab, describe how antibiotic resistance in bacteria may have evolved including the mutation that created the gene, how antibiotics can cause natural selection, how the genetics of the bacteria changes over time (resistant and non-resistant), and how the genetics and phenotypes of the host (resistant and non-resistant) changes over time. 2. If flower color in a plant population is due to 2 alleles (R = red and r= white) which show incomplete dominance (Rr = pink),...

For each type of cell wall in bacteria (gram positive vs. gram negative ) describe the...

For each type of cell wall in bacteria (gram positive vs. gram negative ) describe the unique components present in each and list how each layer of the cell wall is connected together ( what molecules accomplish this)?

xplain how antibiotic resistance develops from a population of susceptible bacteria.

Describe antibiotic tolerance. How does it differ from antibiotic resistance?

Describe antibiotic tolerance. How does it differ from antibiotic resistance? How do bacteria compensate for the decreased fitness cost of resistance? Describe factors important for the emergence of new pathogens and know examples of emerging pathogens and why they emerged

Explain the differences between Gram positive bacteria wall and Gram negative bacteria cell wall.

4. After performing a Gram stain on a Gram negative bacteria, the specimen shows purple bacteria....

4. After performing a Gram stain on a Gram negative bacteria, the specimen shows purple bacteria. Which of the following best explains why this occurred? A. Crystal violet was not used B. Decolorizer was not used C. The specimen was not heat-fixed D. Safranin was not used 5. Which of the following pieces of evidence could support the endosymbiotic theory if found in some eukaryotes? A. Presence of 80S ribosomes B. The presence of formylated methionine C. Genes that allow...

How might normal microbiota play a role in the development of antibiotic resistance in pathogenic bacteria

Question