Mer Scott
Test por , creado hace más de 1 año

• Explain what is meant by the term “selective toxicity”. • Identify 5 bacterial cell components targeted by different classes of antibiotics. • Describe some of the mechanisms of the development of antibiotic resistance and discuss how to reduce its development. • Outline the source, mode of action, importance and factors potentially compromising the successful application of penicillin to the control of bacterial infections.

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Mer Scott
Creado por Mer Scott hace más de 7 años
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L37 Antimicrobial Chemotherapy

Pregunta 1 de 5

1

Which of these best describes selective toxicity?

Selecciona una de las siguientes respuestas posibles:

  • The toxicity of a treatment of antibiotics gauged by effect on the host cells.

  • The property of antibiotics that allow them to kill microbial cells but not the host cells.

  • The property of a drug meaning they affect only some cells and not other. One which kills microbial cells but not host cells is an ideal antibiotic.

Explicación

Pregunta 2 de 5

1

How does penicillin work?

Selecciona una de las siguientes respuestas posibles:

  • It interferes with the formation of the peptidoglycan wall by inhibiting formation of cross links.

  • It mimics the enzyme which forms the polyglycopeptides preventing the NAG NAM chain from forming.

Explicación

Pregunta 3 de 5

1

What are five ways bacteria can be targeted by microbes?

Selecciona una o más de las siguientes respuestas posibles:

  • Inhibition of cell wall synthesis

  • Inhibition of protein synthesis

  • Disruption of cytoplasmic membrane

  • Inhibition of general metabolic pathway

  • Inhibition of DNA/RNA synthesis

  • Degradation of intracellular enzymes

  • Opsonisation of flagella

Explicación

Pregunta 4 de 5

1

Antibiotic resistance will be conferred on the of an antibiotic, hence the microbe has a to evolve to resist antibiotics. An example of this is enzyme produced by some microbes, which breaks and disables the ring of penicillin.
Microbial resistance can also be passed on by gene transfer.

Arrastra y suelta para completar el texto.

    survivors
    selection pressure
    beta-lactamase
    lactam
    vertical or horizontal

Explicación

Pregunta 5 de 5

1

Which of these is not a method to reduce the development of antibiotic resistance?

Selecciona una de las siguientes respuestas posibles:

  • Decrease antibiotic utilisation

  • Combination therapy

  • Improve diagnostics

  • Identify new targets

  • Identify new antibiotics

Explicación

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