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Pharmacology and Therapeutics

1,699 Questions

Engage with critical pharmacology and therapeutics questions covering drug classifications and therapeutic mechanisms. Topics include chemical absorption, medication formulations, and pharmacogenomics. This collection is useful for students preparing for medical entrance, nursing, and science competitive examinations.

Chemical absorption routesDrug formulation typesMedication mechanismsEnzyme inhibitorsPharmacogenomic tests

Pharmacology and Therapeutics Questions

Multiple choice

What was the first drug to be used to treat cancer?

  1. Methotrexate

  2. Cisplatin

  3. 5-Fluorouracil

  4. Doxorubicin
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Methotrexate was the first drug to be used to treat cancer, in 1948.

Multiple choice

What was the first drug to be developed in India?

  1. Quinine

  2. Morphine

  3. Aspirin

  4. Penicillin
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Quinine was the first drug to be developed in India, in 1820.

Multiple choice

What was the first drug to be developed in the United States?

  1. Morphine

  2. Aspirin

  3. Quinine

  4. Penicillin
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Morphine was the first drug to be developed in the United States, in 1806.

Multiple choice

Which of the following is a synthetic glucocorticoid?

  1. Hydrocortisone

  2. Prednisone

  3. Dexamethasone

  4. Fludrocortisone
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Dexamethasone is a synthetic glucocorticoid that is more potent than hydrocortisone and has a longer duration of action.

Multiple choice

Which of the following is an example of a beta-blocker?

  1. Propranolol

  2. Atropine

  3. Salbutamol

  4. Dopamine
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Propranolol is a beta-blocker, which means it blocks the effects of adrenaline on beta-adrenergic receptors.

Multiple choice

What is the mechanism of action of paracetamol?

  1. Inhibits cyclooxygenase

  2. Blocks histamine receptors

  3. Activates opioid receptors

  4. Increases serotonin levels
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Paracetamol works by inhibiting cyclooxygenase, an enzyme involved in the production of prostaglandins, which are responsible for pain and inflammation.

Multiple choice

Which drug class includes medications that lower blood pressure by inhibiting the renin-angiotensin-aldosterone system?

  1. ACE inhibitors

  2. Beta-blockers

  3. Diuretics

  4. Calcium channel blockers
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

ACE inhibitors are a class of drugs that lower blood pressure by inhibiting the renin-angiotensin-aldosterone system, which regulates blood pressure.

Multiple choice

What is the primary mechanism of action of statins?

  1. Inhibiting sodium-potassium ATPase

  2. Blocking calcium channels

  3. Reducing cholesterol synthesis

  4. Activating beta-adrenergic receptors
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Statins work by inhibiting HMG-CoA reductase, an enzyme involved in cholesterol synthesis, thereby reducing cholesterol levels in the blood.

Multiple choice

What is the mechanism of action of nonsteroidal anti-inflammatory drugs (NSAIDs)?

  1. Inhibiting cyclooxygenase

  2. Blocking histamine receptors

  3. Activating opioid receptors

  4. Increasing serotonin levels
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

NSAIDs work by inhibiting cyclooxygenase, an enzyme involved in the production of prostaglandins, which are responsible for pain and inflammation.

Multiple choice

Which drug class includes medications that work by blocking the effects of acetylcholine at muscarinic receptors?

  1. Anticholinergics

  2. Beta-blockers

  3. Diuretics

  4. Calcium channel blockers
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Anticholinergics are a class of drugs that work by blocking the effects of acetylcholine at muscarinic receptors, which are involved in various bodily functions such as salivation, sweating, and gastrointestinal motility.

Multiple choice

What is the mechanism of action of diuretics?

  1. Inhibiting sodium-potassium ATPase

  2. Blocking calcium channels

  3. Reducing cholesterol synthesis

  4. Activating beta-adrenergic receptors
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Diuretics work by inhibiting sodium-potassium ATPase, a pump that helps regulate fluid and electrolyte balance in the body, leading to increased urine output and decreased blood pressure.

Multiple choice

Which drug class includes medications that work by blocking the effects of histamine at H1 receptors?

  1. Antihistamines

  2. Beta-blockers

  3. Diuretics

  4. Calcium channel blockers
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Antihistamines are a class of drugs that work by blocking the effects of histamine at H1 receptors, which are involved in allergic reactions and other conditions.

Multiple choice

What is the primary mechanism of action of calcium channel blockers?

  1. Inhibiting sodium-potassium ATPase

  2. Blocking calcium channels

  3. Reducing cholesterol synthesis

  4. Activating beta-adrenergic receptors
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Calcium channel blockers work by blocking the influx of calcium ions into cells, which is important for muscle contraction and nerve impulse transmission.

Multiple choice

Which drug class includes medications that work by activating opioid receptors?

  1. Opioid analgesics

  2. Antipsychotics

  3. Dopamine agonists

  4. Benzodiazepines
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Opioid analgesics are a class of drugs that work by activating opioid receptors, which are involved in pain perception and modulation.

Multiple choice

Which of the following medications is commonly used to treat high blood pressure in men?

  1. ACE inhibitors

  2. Beta-blockers

  3. Diuretics

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

ACE inhibitors, beta-blockers, and diuretics are all commonly used to treat high blood pressure in men.