Pharmacology Basics Practice Questions
20 free Pharmacology Basics practice questions for the Static GK. Tap an option to answer — you get instant feedback, the correct answer, and a detailed explanation for every question.
What is pharmacology primarily concerned with?
- A The study of diseases and how they affect the human body over time
- B The study of drugs and their effects on living organisms
- C The surgical treatment of injuries
- D The preparation of hospital diets
Correct answer: The study of drugs and their effects on living organisms
Pharmacology is the study of drugs, including how they act in the body and how the body handles them. It includes drug uses, effects, side effects, and mechanisms of action.
Which term refers to the study of how the body absorbs, distributes, metabolizes, and excretes a drug?
- A Pharmacodynamics
- B Pharmacokinetics
- C Toxicology
- D Immunology
Correct answer: Pharmacokinetics
Pharmacokinetics describes what the body does to a drug. It includes absorption, distribution, metabolism, and excretion, often remembered as ADME.
Which term describes what a drug does to the body?
- A Pharmacodynamics
- B Pharmacokinetics
- C Biochemistry
- D Pathology
Correct answer: Pharmacodynamics
Pharmacodynamics deals with the effects of drugs on the body. It includes receptor interactions, dose-response relationships, and mechanisms of action.
What is meant by the therapeutic dose of a drug?
- A The dose that commonly leads to serious unwanted toxic effects
- B The amount of drug that produces the desired beneficial effect
- C The dose typically tested in laboratory animal studies before human trials
- D The maximum dose that can be sold without prescription
Correct answer: The amount of drug that produces the desired beneficial effect
A therapeutic dose is the amount of a drug that produces the intended medical effect. It should be effective while remaining within a safe range.
Which route of drug administration usually provides the fastest systemic effect?
- A Oral
- B Topical application
- C Intravenous
- D Rectal
Correct answer: Intravenous
Intravenous administration delivers the drug directly into the bloodstream. This avoids absorption delays and usually gives the fastest systemic action.
Which organ is mainly responsible for the metabolism of many drugs?
- A Liver
- B Spleen
- C Skin
- D Lungs
Correct answer: Liver
The liver is the major organ involved in drug metabolism. It uses enzymes to chemically modify many drugs, often making them easier to eliminate.
Which organ is mainly responsible for excreting many drugs and their metabolites from the body?
- A Kidneys
- B Spleen
- C Thyroid gland
- D Gallbladder
Correct answer: Kidneys
The kidneys filter blood and remove many drugs and metabolites through urine. Kidney function is important when deciding doses for certain medicines.
What is a side effect of a drug?
- A A drug's intended main therapeutic action
- B An unintended effect that occurs along with the intended effect
- C A drug manufacturing error
- D A disease caused specifically by a long-term lack of essential vitamins
Correct answer: An unintended effect that occurs along with the intended effect
A side effect is an unintended effect of a drug. Some side effects are mild, while others may require medical attention.
What is an adverse drug reaction?
- A A harmful or unwanted reaction to a drug
- B A normal taste of a tablet
- C A drug's official brand or trade name given by its manufacturer
- D The color of a medicine strip
Correct answer: A harmful or unwanted reaction to a drug
An adverse drug reaction is a harmful or unwanted response to a medicine. It can occur even when the drug is used at normal doses.
Which type of drug kills or inhibits the growth of bacteria?
- A Analgesic
- B Antibiotic
- C Antacid
- D Antihistamine
Correct answer: Antibiotic
Antibiotics are medicines used against bacterial infections. They do not work against viral infections such as the common cold.
Which drug category is commonly used to relieve pain?
- A Analgesics
- B Diuretics
- C Anticoagulants
- D Sedatives
Correct answer: Analgesics
Analgesics are drugs used to reduce or relieve pain. Examples include paracetamol and some non-steroidal anti-inflammatory drugs.
Which medicine is commonly used to reduce fever and mild pain?
- A Paracetamol
- B Insulin therapy
- C Heparin
- D Adrenaline
Correct answer: Paracetamol
Paracetamol is commonly used as an antipyretic and analgesic. This means it can reduce fever and relieve mild to moderate pain.
Which class of drugs is used to lower blood glucose in diabetes?
- A Antidiabetic drugs
- B Antihistamines
- C Antimalarials
- D Antacid medications
Correct answer: Antidiabetic drugs
Antidiabetic drugs help control blood glucose levels in people with diabetes. Insulin and oral hypoglycemic medicines are examples.
What are vaccines mainly used for?
- A Treating bone fractures and orthopedic injuries
- B Preventing specific infectious diseases
- C Replacing blood in the body
- D Increasing height in adults
Correct answer: Preventing specific infectious diseases
Vaccines stimulate the immune system to recognize and fight specific infections. They are primarily used for disease prevention.
Which term refers to a drug that binds to a receptor and activates it?
- A Antagonist
- B Placebo
- C Excipient
- D Agonist
Correct answer: Agonist
An agonist binds to a receptor and produces a biological response. It mimics or enhances the action of a natural body chemical.
Which term refers to a drug that blocks or reduces the action of another substance at a receptor?
- A Agonist
- B Nutrient supplement
- C Solvent
- D Antagonist
Correct answer: Antagonist
An antagonist binds to a receptor but does not activate it. It blocks or reduces the effect of an agonist or natural chemical.
What is a placebo?
- A A drug known to commonly cause allergic reactions
- B A medicine used only for surgery
- C A chemical compound that is claimed to destroy many different types of viruses
- D A substance with no active drug effect used for comparison in studies
Correct answer: A substance with no active drug effect used for comparison in studies
A placebo looks like a treatment but does not contain an active drug. It is often used in clinical trials to compare true drug effects.
What does the term 'contraindication' mean in pharmacology?
- A The price or retail cost that is listed for a particular medicine at the pharmacy
- B The color coding of tablets
- C The expiry date printed on a packet
- D A reason why a drug should not be used in a particular patient or situation
Correct answer: A reason why a drug should not be used in a particular patient or situation
A contraindication is a condition or factor that makes a drug unsafe or unsuitable. For example, some medicines are contraindicated in pregnancy or severe allergy.
Which of the following best describes drug tolerance?
- A An immediate cure after one dose
- B A drug's ability to dissolve in water
- C A reduced response to a drug after repeated use
- D A medicine's outer packaging material and container design
Correct answer: A reduced response to a drug after repeated use
Drug tolerance occurs when the body responds less to a drug over time. Higher doses may be needed to produce the same effect, but this can increase risk.
Why is self-medication with antibiotics considered risky?
- A It can temporarily improve how a person feels without treating the cause
- B It makes most common medicines more affordable
- C It can contribute to antibiotic resistance and improper treatment
- D It helps prevent common viral infections
Correct answer: It can contribute to antibiotic resistance and improper treatment
Incorrect or unnecessary antibiotic use can promote antibiotic resistance. It may also delay proper diagnosis and treatment of the actual illness.