PTCE Drug Classifications 2 — Questions and Answers
Question 1: Which drug class is primarily used to treat type 2 diabetes by increasing insulin sensitivity in peripheral tissues?
- Sulfonylureas
- Thiazolidinediones (Correct answer)
- Meglitinides
- Alpha-glucosidase inhibitors
Correct answer: Thiazolidinediones
Thiazolidinediones (e.g., pioglitazone) work as insulin sensitizers by activating PPAR-gamma receptors in adipose and muscle tissue.
Question 2: A patient is prescribed a selective serotonin reuptake inhibitor (SSRI). Which of the following belongs to this class?
- Amitriptyline
- Venlafaxine
- Sertraline (Correct answer)
- Bupropion
Correct answer: Sertraline
Sertraline (Zoloft) is an SSRI; amitriptyline is a TCA, venlafaxine is an SNRI, and bupropion is an NDRI.
Question 3: Which class of antibiotics inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins?
- Macrolides
- Fluoroquinolones
- Beta-lactams (Correct answer)
- Aminoglycosides
Correct answer: Beta-lactams
Beta-lactams (penicillins, cephalosporins, carbapenems) all inhibit cell wall synthesis by targeting penicillin-binding proteins.
Question 4: Omeprazole is classified as which type of drug?
- H2 receptor antagonist
- Proton pump inhibitor (Correct answer)
- Antacid
- Prokinetic agent
Correct answer: Proton pump inhibitor
Omeprazole irreversibly inhibits the H+/K+ ATPase proton pump in gastric parietal cells, classifying it as a PPI.
Question 5: Which drug class is contraindicated in patients with a sulfa allergy due to the sulfonamide moiety in its structure?
- ACE inhibitors
- Thiazide diuretics (Correct answer)
- Beta-blockers
- Calcium channel blockers
Correct answer: Thiazide diuretics
Thiazide diuretics contain a sulfonamide group and may cause cross-reactivity in patients with documented sulfa allergies.
Question 6: Opioid analgesics produce their effects primarily by binding to which receptor type?
- GABA-A receptors
- Mu opioid receptors (Correct answer)
- NMDA receptors
- Alpha-2 adrenergic receptors
Correct answer: Mu opioid receptors
Opioids primarily bind mu (μ) opioid receptors in the CNS and periphery to produce analgesia, euphoria, and respiratory depression.
Question 7: Which class of medications is used to treat osteoporosis by inhibiting osteoclast-mediated bone resorption?
- Bisphosphonates (Correct answer)
- SERMs
- Calcitonin
- PTH analogs
Correct answer: Bisphosphonates
Bisphosphonates (e.g., alendronate) bind to bone mineral and inhibit osteoclast activity, reducing bone resorption.
PTCE Drug Classifications 2
Which drug class is primarily used to treat type 2 diabetes by increasing insulin sensitivity in peripheral tissues?