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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

Which of the following is an example of a leukotriene modifier?

  1. Montelukast

  2. Zafirlukast

  3. Cromolyn sodium

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

Montelukast is a leukotriene modifier that works by blocking the action of leukotrienes, which are inflammatory mediators that contribute to the symptoms of asthma and COPD.

Multiple choice

Which of the following is an example of a mast cell stabilizer?

  1. Cromolyn sodium

  2. Nedocromil sodium

  3. Montelukast

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

Cromolyn sodium is a mast cell stabilizer that works by preventing the release of inflammatory mediators from mast cells, which are immune cells that play a role in the development of asthma and allergic rhinitis.

Multiple choice

Which of the following is NOT a Schedule I controlled substance?

  1. Heroin

  2. Cocaine

  3. LSD

  4. Marijuana
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Marijuana is a Schedule I controlled substance, which means it has a high potential for abuse and no accepted medical use.

Multiple choice

Which of the following is NOT a type of anti-inflammatory drug?

  1. Nonsteroidal anti-inflammatory drugs (NSAIDs)

  2. Corticosteroids

  3. Antihistamines

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

Antihistamines are not anti-inflammatory drugs. They are used to treat allergic reactions by blocking the effects of histamine, a potent inflammatory mediator.

Multiple choice

Which of the following is NOT a type of inflammatory mediator?

  1. Histamine

  2. Serotonin

  3. Prostaglandins

  4. Interleukin-1 (IL-1)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Serotonin is not an inflammatory mediator. It is a neurotransmitter that is involved in mood, sleep, and appetite regulation.

Multiple choice

Which of the following medications can increase the risk of osteoporosis?

  1. Aspirin

  2. Ibuprofen

  3. Glucocorticoids

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

Glucocorticoids, such as prednisone, can increase the risk of osteoporosis by inhibiting bone formation and promoting bone resorption.

Multiple choice

Which genetic variation is commonly associated with altered drug metabolism?

  1. Single nucleotide polymorphisms (SNPs)

  2. Copy number variations (CNVs)

  3. Insertions and deletions (INDELS)

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

Single nucleotide polymorphisms (SNPs) are the most common type of genetic variation and can lead to changes in drug metabolism by altering the structure or function of drug-metabolizing enzymes or transporters.

Multiple choice

Which genetic variation is associated with a decreased metabolism of warfarin?

  1. CYP2C9*2

  2. CYP2C9*3

  3. VKORC1*1173C>T

  4. CYP3A4*1B
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The VKORC1*1173C>T polymorphism is associated with a decreased metabolism of warfarin, leading to an increased risk of bleeding complications.

Multiple choice

Which genetic variation is associated with an increased risk of neutropenia with clozapine?

  1. HLA-DRB1*04

  2. CYP2D6*4

  3. UGT1A1*6

  4. VKORC1*1173C>T
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The HLA-DRB1*04 allele is associated with an increased risk of neutropenia, a serious adverse effect of clozapine.

Multiple choice

Which genetic variation is associated with an increased risk of myopathy with statins?

  1. SLCO1B1*5

  2. CYP2C9*2

  3. VKORC1*1173C>T

  4. UGT1A1*6
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The SLCO1B1*5 allele is associated with an increased risk of myopathy, a serious adverse effect of statins.

Multiple choice

Which genetic variation is associated with an increased risk of gastrointestinal side effects with methotrexate?

  1. MTHFR C677T

  2. TPMT*3A

  3. UGT1A1*6

  4. VKORC1*1173C>T
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The TPMT*3A allele is associated with an increased risk of gastrointestinal side effects, such as nausea, vomiting, and diarrhea, with methotrexate.

Multiple choice

Which diuretic is commonly used in the treatment of neonatal edema?

  1. Furosemide

  2. Spironolactone

  3. Hydrochlorothiazide

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

Furosemide is a loop diuretic that is commonly used in the treatment of neonatal edema. It acts by inhibiting the reabsorption of sodium and chloride in the loop of Henle, leading to increased urine output and fluid excretion.

Multiple choice

How does naturopathic medicine view the use of pharmaceutical drugs?

  1. They are always necessary for treating illnesses.

  2. They should be avoided whenever possible.

  3. They can be used in conjunction with natural therapies.

  4. They are only effective for acute conditions.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Naturopathic medicine recognizes that pharmaceutical drugs may be necessary in certain situations, but it also emphasizes the potential benefits of integrating natural therapies alongside conventional medical treatments.

Multiple choice

Which of the following enzymes is involved in Phase I drug metabolism?

  1. Cytochrome P450 enzymes

  2. UDP-glucuronosyltransferases

  3. Sulfotransferases

  4. N-acetyltransferases
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Cytochrome P450 enzymes are a superfamily of enzymes involved in Phase I drug metabolism, responsible for oxidation, reduction, and other reactions that introduce functional groups onto drug molecules.

Multiple choice

What is the primary mechanism of Phase II drug metabolism?

  1. Oxidation

  2. Reduction

  3. Glucuronidation

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

Glucuronidation is the primary mechanism of Phase II drug metabolism, where glucuronic acid is transferred to drug molecules, increasing their water solubility and facilitating their excretion.