Drugs In Medicine

9.Why do doctors avoid prescribing antibiotics for viral infections?

10.Suggest one way to reduce the spread of antibiotic resistance in bacteria.

11.Match each type of drug to its correct description.

12.What does MRSA stand for?

13.Antibiotics are effective against viruses.

14.Antibiotics are used to treat which type of infection?

15.Which of the following are true about antibiotics? (Select all that apply)

16.Which of the following are strategies to reduce the spread of antibiotic resistance in bacteria? (Select all that apply)

17.Arrange the following steps in the correct order to show how antibiotic resistance can develop in a bacterial population over time.

18.A new antibiotic is developed that targets a protein only found in bacterial cell walls. Why is this antibiotic unlikely to harm human cells?

19.A student investigates the effect of an antibiotic on bacterial growth. They inoculate agar plates with bacteria and place paper discs soaked in different concentrations of the antibiotic on the agar. After incubation, they measure the diameter of the clear zones around each disc. Which variable should be kept constant to ensure a fair test?

20.Antibiotics are used to treat bacterial infections.

21.Medicinal drugs are used to treat the symptoms or causes of a disease.

22.Why do antibiotics not harm human cells?

23.Which of the following is an example of a medicinal drug?

24.Reducing the use of antibiotics can help reduce the spread of antibiotic resistance in bacteria.

25.A patient is diagnosed with a bacterial infection. Which of the following is the most appropriate treatment?

26.A patient is prescribed an antibiotic for a bacterial infection. After a few days, the infection does not improve. Which of the following is the most likely explanation?

27.A new antibiotic is developed that targets an enzyme only found in bacterial cells. Which of the following best explains why this antibiotic is unlikely to harm human cells?

28.Which of the following are correct statements about antibiotic resistance? (Select all that apply)

29.Antibiotics are effective against viral infections.

30.A student investigates the effect of an antibiotic on bacterial growth. They inoculate agar plates with bacteria and place paper discs soaked in different concentrations of the antibiotic on the agar. After incubation, they measure the diameter of the clear zone (zone of inhibition) around each disc. Which of the following conclusions is most valid?

31.A student sets up an experiment to test the effect of an antibiotic on bacterial growth. They soak paper discs in different concentrations of the antibiotic and place them on an agar plate inoculated with bacteria. After incubation, they measure the diameter of the clear zone around each disc. Which of the following is the independent variable in this experiment?

32.A bacterial culture of 10⁶ cells contains 2% resistant bacteria. The culture is treated with an antibiotic that kills all non-resistant bacteria instantly. After treatment, the culture is allowed to grow for several generations. Assuming resistant bacteria reproduce at the same rate as non-resistant ones, what is the approximate number of resistant bacteria after one generation?

33.Which of the following are correct statements about the use of antibiotics? (Select all that apply)

34.Antibiotics are effective against bacterial infections but not against viral infections.

35.In an experiment, a student places antibiotic discs on an agar plate inoculated with bacteria. After incubation, the zone of inhibition around disc A is 12 mm and around disc B is 8 mm. Which disc contains the higher concentration of antibiotic?

36.Antibiotics target processes that are specific to bacterial cells so they do not harm animal cells.

37.Antibiotics kill bacteria by damaging their cell walls.

38.Why are antibiotics not prescribed for viral infections?

39.A patient is treated with an antibiotic for a bacterial infection. After several days, the infection clears up, but a small number of bacteria remain. Which of the following best explains why the infection might return later?

40.Which of the following are correct statements about antibiotics? (Select all that apply)

41.State one way doctors can reduce the spread of antibiotic resistance in bacteria.

42.Complete the sentence about antibiotic resistance.

43.A patient takes a 500 mg course of antibiotic. If 2% of the bacteria in an infection are resistant, and the antibiotic kills all non-resistant bacteria, calculate the percentage of the original bacterial population that survives after treatment. Assume the resistant bacteria are not killed.

44.State the term used to describe bacteria that are not killed by an antibiotic.

45.A patient takes a 500 mg course of antibiotic. If 2% of the bacteria in an infection are resistant, and the antibiotic kills all non-resistant bacteria, calculate the percentage of bacteria that survive after treatment.

46.Complete the sentence using the words below.

47.In a bacterial culture of 1,000,000 bacteria, 2% are resistant to an antibiotic. After treatment with the antibiotic, all non-resistant bacteria are killed. How many bacteria survive?

48.A patient takes a 500 mg course of antibiotic. If 2% of the bacteria in an infection are resistant, and the antibiotic kills all non-resistant bacteria, calculate the number of resistant bacteria remaining if the initial population was 5,000,000.

49.Explain why doctors avoid prescribing antibiotics for viral infections.

50.Explain why doctors do not prescribe antibiotics for viral infections.

51.Explain why reducing the use of antibiotics can help reduce the spread of antibiotic resistance in bacteria.

52.A patient takes a 500 mg course of antibiotic. If 2% of the bacteria in an infection are resistant, and the antibiotic kills all non-resistant bacteria, calculate the percentage of the original bacterial population that survives after treatment. Assume the resistant bacteria are not killed.

53.A patient takes a 500 mg course of antibiotic. If 2% of the bacteria in an infection are resistant, and the antibiotic kills all non-resistant bacteria, calculate the percentage of bacteria that survive after treatment.

54.In a bacterial culture of 1,000,000 bacteria, 2% are resistant to an antibiotic. After treatment with the antibiotic, all non-resistant bacteria are killed. How many bacteria survive?

55.A patient takes a 500 mg course of antibiotic. If 2% of the bacteria in an infection are resistant, and the antibiotic kills all non-resistant bacteria, calculate the number of resistant bacteria remaining if the initial population was 5,000,000.