R Ram Sharma 🎓 Coach ⭐ 193.88K Points 📊 Biology Q. The main buffer system of the human blood is (A) H2CO3 - CO32- (B) H2CO3 - HCO3 (C) CH3COOH - CH3COO- (D) NH2CONH2 - NH2CONH+ 👁️ Show Answer 🔗 Share ⚡Menu ✅ Correct Answer: (B) H2CO3 - HCO3 You must be Logged in to update hint/solution 💬 Discussion 💬 Comment