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.
Why are doctors becoming more cautious about prescribing antibiotics for every minor infection?
A.To save time during appointments
B.To slow down the development of antibiotic resistance
C.Because antibiotics are becoming toxic to humans
D.Because bacteria have all been wiped out
- 2.
Which scientist(s) worked on the mass production and purification of Penicillin for medical use?
A.Charles Darwin
B.Florey and Chain
C.Watson and Crick
D.Albert Einstein
- 3.
Which of these is the most effective way to reduce the spread of antibiotic-resistant 'superbugs' in hospitals?
A.Regular hand washing and hygiene protocols
B.Giving every patient antibiotics as a precaution
C.Keeping the windows closed at all times
D.Increasing the room temperature
- 4.
What should you do with leftover antibiotics from a previous infection?
A.Save them for the next time you feel sick
B.Give them to a friend with similar symptoms
C.Dispose of them safely according to a pharmacist's advice
D.Throw them in the garden to help plants grow
- 5.
Why is it important to isolate patients infected with highly resistant bacteria in hospitals?
A.To prevent the bacteria from escaping into the atmosphere
B.To prevent the transfer of resistant bacteria to other vulnerable patients
C.To ensure the patient doesn't get a different infection from the hospital
D.To keep the patient in a warm environment
- 6.
What is the purpose of the 'disc diffusion' (Kirby-Bauer) method?
A.To count the total number of bacteria in a sample
B.To determine which antibiotic is most effective against a specific pathogen
C.To grow large amounts of antibiotics for sale
D.To see how many different species of bacteria are in the air
- 7.
Which of the following represents a 'narrow-spectrum' antibiotic strategy?
A.Using an antibiotic that kills all known bacteria
B.Using an antibiotic that specifically targets only one or two types of bacteria
C.Using a very small dose of a broad-spectrum drug
D.Using a drug that only works for exactly ten minutes
- 8.
A scientist treats a bacterial culture with an antibiotic and observes that the total number of cells remains constant, but the number of viable (living) cells drops to zero. Which term describes this antibiotic?
A.Bacteriostatic
B.Bactericidal but not bacteriolytic
C.Bacteriolytic
D.Antiviral
- 9.
Which statement correctly describes the relationship between 'Selection Pressure' and antibiotic resistance?
A.High selection pressure (excessive antibiotic use) increases the frequency of resistance alleles in a population
B.High selection pressure causes the bacteria to produce more mutations to survive
C.Low selection pressure (no antibiotics) makes resistance genes disappear immediately
D.Selection pressure only applies to viruses, not bacteria
- 10.
Why does a 'Zone of Inhibition' appear circular when an antibiotic disc is placed on an agar plate?
A.Bacteria only grow in circles
B.The antibiotic molecules diffuse outward from the disc at an equal rate in all directions
C.The agar is poured in a circular petri dish
D.The magnetic field of the earth influences the drug movement
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 of these is a long-term risk associated with heavy tobacco use?
A.Improved athletic performance
B.High risk of lung and throat diseases
C.Increased lung capacity
D.Better sense of smell
- 2.
Which of the following describes the effect of alcohol on the body's reaction to a stimulus?
A.Stimulus --> Faster Brain Processing --> Rapid Response
B.Stimulus --> Slower Brain Processing --> Delayed Response
C.Stimulus --> No Brain Processing --> No Response
D.Stimulus --> Instant Brain Processing --> No Response
- 3.
Which substance in tobacco smoke is known to irritate the lining of the bronchi?
A.Tar
B.Glucose
C.Oxygen
D.Vitamin C
- 4.
A person who needs a drug to function normally is said to have a/an:
A.Infection
B.Immunity
C.Addiction
D.Antibiotic
- 5.
When a person consumes alcohol, which of the following is an immediate short-term effect on the stomach?
A.Increased production of stomach acid, which can irritate the lining
B.Immediate digestion of all food present
C.Tightening of the sphincter to prevent vomiting
D.Rapid cooling of the stomach contents
- 6.
What is the relationship between tar and the surface area of the lungs?
A.Tar increases the surface area by creating more folds in the alveoli.
B.Tar coats the alveoli and contributes to the breakdown of alveolar walls, reducing surface area.
C.Tar has no effect on the physical structure of the alveoli.
D.Tar only affects the trachea and has no impact on the lungs themselves.
- 7.
Why does drinking alcohol often lead to poor decision-making and risk-taking behavior?
A.It increases the speed of reflexes.
B.It impairs the function of the frontal lobes of the brain.
C.It improves the clarity of thought and memory.
D.It reduces the amount of glucose reaching the brain.
- 8.
Wernicke-Korsakoff syndrome is a neurological disorder often associated with chronic alcohol abuse. What is its underlying nutritional cause?
A.Thiamine (Vitamin ) deficiency
B.Excessive Vitamin C intake from mixers
C.Lack of dietary protein
D.Malabsorption of Vitamin K
- 9.
Which part of the tobacco plant is nicotine naturally found in, and what is its biological purpose for the plant?
A.Leaves; acting as an insecticide to deter herbivores
B.Roots; acting as a nitrogen-fixing chemical
C.Flowers; acting as a pheromone to attract pollinators
D.Seeds; acting as a growth hormone for germination
- 10.
How does alcohol misuse lead to 'ascites' (accumulation of fluid in the abdomen)?
A.Liver damage reduces albumin production, lowering blood osmotic pressure
B.The alcohol molecules leak out of the stomach and attract water into the cavity
C.The kidneys stop producing urine, and the fluid backs up into the abdomen
D.Alcohol causes the lymphatic vessels to burst in the abdominal region
Download the worksheet for Drugs - Misused drugs (Alcohol and Tobacco) to practice offline. It includes additional chapter-level practice questions.