This question is about pathogens and treatments.
A microbiologist investigated the efficacy of different antimicrobial substances on a lawn of Escherichia coli cultivated on a solid nutrient medium.
Name one antibiotic other than penicillin and amoxicillin.
The microbiologist placed three paper discs containing different antimicrobial agents (labeled A, B, and C) onto the agar.
A student stated: 'The bacterium is completely resistant to antibiotic C.'
Explain how the results shown in the diagram prove that the student's statement is incorrect.
Explain why the emergence and rapid spread of multi-drug-resistant bacterial strains pose a major challenge to global healthcare systems.
State why a virologist cannot use a sterile nutrient agar gel to culture a sample of influenza virus.
Explain why it is extremely difficult to develop antiviral medications that destroy viral pathogens without causing significant harm to the patient.
Identify which of the following infectious diseases is caused by a viral pathogen rather than a bacterium.
Select one option:
- Cholera
- Tuberculosis
- Gonorrhoea
- HIV/AIDS