How many standard amino acids are classified as ‘essential’ for humans? By Rabia Anum ✅ Fact Checked 📊 Difficulty Medium 📅 Last Updated 13 Aug 2026 A. Three B. Six C. Nine D. Twelve Check Answer 💡 Explanation: Nine of the 20 standard amino acids are essential, meaning the human body cannot synthesize them and they must be obtained from food. 📚 Topics: Food and Cuisine Nutrition 🎯 Exams: CSS GEN NTS PMS
