Drugs

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Medicinal drugs (Antibiotics)

Subtopic

Medicinal drugs (Antibiotics) under Drugs for Grade 12 IGCSE.

About Topic & Revision

Preview questions (no answers)

1.
$Which human action most directly contributes to the increase in antibiotic-resistant bacterial populations?$
A. $Finishing a prescribed course of antibiotics$
B. $Using vaccinations for viral diseases$
C. $Washing hands with plain soap and water$
D. $Failing to complete a full course of prescribed antibiotics$
2.
$Why are antibiotics ineffective against viral infections such as influenza?$
A. $Viruses lack cell walls and their own metabolic machinery$
B. $Viruses are much larger than bacteria$
C. $Viruses possess a thick protein coat that antibiotics cannot penetrate$
D. $Viruses live only in the bloodstream where antibiotics are diluted$
3.
$Antibiotics are effective against which type of pathogen?$
A. $Viruses$
B. $Bacteria$
C. $Prions$
D. $Viroids$

Download the worksheet for Drugs - Medicinal drugs (Antibiotics) to practice offline. It includes additional chapter-level practice questions.

Misused drugs (Alcohol/Tobacco)

Subtopic

Misused drugs (Alcohol/Tobacco) under Drugs for Grade 12 IGCSE.

About Topic & Revision

Preview questions (no answers)

1.
$What is the specific effect of carbon monoxide from cigarette smoke on the blood?$
A. $It increases the production of white blood cells.$
B. $It binds to hemoglobin, reducing the blood's capacity to carry oxygen.$
C. $It causes the blood to clot more quickly inside the veins.$
D. $It dissolves in the plasma and lowers the pH of the blood significantly.$
2.
$In the human body, which organ is primarily responsible for the detoxification of alcohol?$
A. $Liver$
B. $Kidneys$
C. $Pancreas$
D. $Stomach$
3.
$Alcohol is classified as a 'depressant' drug. What does this mean for the person consuming it?$
A. $It slows down the transmission of nerve impulses in the central nervous system.$
B. $It makes the person feel emotionally sad and withdrawn immediately.$
C. $It increases the speed of chemical reactions at the synapses.$
D. $It stimulates the brain to release more adrenaline, increasing heart rate.$

Download the worksheet for Drugs - Misused drugs (Alcohol/Tobacco) to practice offline. It includes additional chapter-level practice questions.

Drugs - IGCSE Grade 12 Biology Notes & Revision | Krit.club