This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pharmacology, Subject name: Pharmacology
Most common drug transpo mechanism is 
Select and explain. 
A. Active transpo, B. passive diffusion, C. facilitated diffusion, D. P glycoprotein
B: passive diffusion
Answer: B: passive diffusion 
Explanation: Passive diffusion- entry of drugs from high to low conc. with no requirement of ATP or energy Pg.no 30 KD TRIPATHI Seventh edition