VTNE Pharmacy and Pharmacology 4

Question 1

Which of the following accurately describes 'bioavailability'?

Accepted Answer

Fraction of administered drug that reaches systemic circulation unchanged

Answer

Bioavailability refers to the proportion of a drug that enters the systemic circulation in its active form after administration.

Question 2

Which antibiotic class inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins?

Accepted Answer

Beta-lactams

Answer

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

Question 3

A technician receives a prescription for a Schedule III controlled substance. How long is this prescription valid in most US states?

Accepted Answer

6 months

Answer

Schedule III and IV prescriptions are typically valid for 6 months and may be refilled up to 5 times during that period.

Question 4

Which drug is the reversal agent for alpha-2 adrenergic agonists such as dexmedetomidine?

Accepted Answer

Atipamezole

Answer

Atipamezole (Antisedan) is a specific alpha-2 antagonist used to reverse the effects of medetomidine and dexmedetomidine.

Question 5

Which antifungal drug works by inhibiting ergosterol synthesis in fungal cell membranes?

Accepted Answer

Fluconazole

Answer

Azole antifungals like fluconazole inhibit fungal cytochrome P450 enzymes, blocking ergosterol synthesis and disrupting the cell membrane.

VTNE - Veterinary Technician National Examination Practice Test