PTCB Pharmacology #2 2

Question 1

Which drug suffix is characteristic of calcium channel blockers (dihydropyridine class)?

Accepted Answer

-dipine

Answer

Dihydropyridine calcium channel blockers end in "-dipine" (amlodipine, nifedipine, felodipine). Non-dihydropyridines (verapamil, diltiazem) have different suffixes.

Question 2

Albuterol (ProAir, Ventolin) primarily acts on which receptor?

Accepted Answer

Beta-2 adrenergic

Answer

Albuterol is a selective beta-2 adrenergic agonist that causes bronchodilation by relaxing airway smooth muscle. It is the most common rescue inhaler for asthma and COPD.

Question 3

Which term describes a drug that binds to a receptor and produces a response?

Accepted Answer

Agonist

Answer

An agonist binds to a receptor and activates it to produce a pharmacological response. An antagonist binds but does not activate the receptor, blocking agonist effects.

Question 4

Loop diuretics like furosemide primarily cause loss of which electrolyte?

Accepted Answer

Potassium and sodium

Answer

Loop diuretics cause loss of sodium, chloride, potassium, magnesium, and calcium. Hypokalemia is the most clinically significant electrolyte disturbance, requiring monitoring and supplementation.

Question 5

Which class of antibiotic inhibits cell wall synthesis by binding to penicillin-binding proteins (PBPs)?

Accepted Answer

Beta-lactams

Answer

Beta-lactam antibiotics (penicillins, cephalosporins, carbapenems) inhibit bacterial cell wall synthesis by binding to and inactivating penicillin-binding proteins (PBPs).

Pharmacy Practice Test

Pharmacy Practice Test

PTCB Pharmacology #2 2