Microbiology The difference between Gram + ve and Gram -ve organism is that Gram+ve org. contains – A Teichoic acid B Muramic acid C N-acetyl neuraminin acid D Aromatic amino acids 💡 Explanation The difference between Gram + ve and Gram -ve organism is that Gram+ve org. contains - ✓ Correct Answer: A. Teichoic acid