Question
The partial pressures (in mm Hg) of oxygen (O2) and carbon dioxide (CO2) at alveoli (the site of diffusion) are:
pO2 = 104 and pCO2 = 40
pO2 = 40 and pCO2 = 45
pO2 = 95 and pCO2 = 40
pO2 = 159 and pCO2 = 0.3
Analytics · Leaderboards · Full NEET Mock Tests · 15,000+ MCQs
This NEET BIOLOGY practice question is part of the TopperSquare free question bank. TopperSquare offers 15,000+ chapter-wise NEET MCQs across Physics, Chemistry, and Biology with detailed step-by-step explanations, full mock tests, NEET PYQs (2010–2024), and an AI-powered performance analytics dashboard. Browse all NEET practice questions →