This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General, Subject name: Microbiology
Cell wall of gram positive bacteria contain s- 
Select and explain. 
A. Lipids, B. Aromatic amino acids, C. Teichoic acid, D. All of the above
C: Teichoic acid
Answer: C: Teichoic acid 
Explanation: Ans. is 'c' i.e., Teichoic acid Comparison of cell walls of Gram positive and Gram negative bacteria Gram positiveGram negativeThicknessThickerThinnerVariety of aminoacidsFewSeveralAromatic and Sulphur containing aminoacidsAbsentPresentLipidsAbsent or scantyPresentTeichoic acidPresentAbsent