Drugs
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Medicinal drugs (Antibiotics)
SubtopicMedicinal drugs (Antibiotics) under Drugs for Grade 11 IGCSE.
Preview questions (no answers)
- 1.
In a laboratory test (disk diffusion assay), several antibiotic discs are placed on an agar plate covered in bacteria. What does a large 'zone of inhibition' around a disc indicate?
A.The bacteria are resistant to that antibiotic.
B.The antibiotic is effective at killing or inhibiting the growth of the bacteria.
C.The antibiotic is providing nutrients for the bacteria to grow faster.
D.The agar has dried out in that specific area.
- 2.
Many antibiotics were originally discovered as natural substances produced by other organisms. From which group of organisms was Penicillin first isolated?
A.Fungi
B.Mammals
C.Flowering plants
D.Insects
- 3.
Which group of microorganisms is the primary target for treatment with antibiotics?
A.Protozoa
B.Viruses
C.Bacteria
D.Algae
Download the worksheet for Drugs - Medicinal drugs (Antibiotics) to practice offline. It includes additional chapter-level practice questions.
Misused drugs (Alcohol and Tobacco)
SubtopicMisused drugs (Alcohol and Tobacco) under Drugs for Grade 11 IGCSE.
Preview questions (no answers)
- 1.
Which component of cigarette smoke acts as a carcinogen, directly increasing the risk of developing lung cancer?
A.Tar
B.Water vapor
C.Nicotine
D.Carbon dioxide
- 2.
What is a common short-term effect of alcohol consumption on a person's ability to drive?
A.Decreased reaction time (faster response)
B.Increased reaction time (slower response)
C.Improved peripheral vision
D.Enhanced muscle coordination
- 3.
Which specific substance found in tobacco smoke is primarily responsible for its addictive nature?
A.Carbon monoxide
B.Tar
C.Nitrogen oxides
D.Nicotine
Download the worksheet for Drugs - Misused drugs (Alcohol and Tobacco) to practice offline. It includes additional chapter-level practice questions.