Teichoic acids are components of the cell wall found in which type of bacteria?
Solution
Correct Answer: Option C
- Teichoic acids are polymers of glycerol or ribitol phosphate embedded in the thick peptidoglycan layer of Gram-positive bacterial cell walls.
- They play roles in cell wall maintenance, ion regulation, and adherence.
- Gram-negative bacteria have an outer membrane and lack teichoic acids.
- Acid-fast bacteria have a lipid-rich cell wall, and Mycoplasma species lack a cell wall entirely, hence they do not contain teichoic acids.
Reference: Jawetz, Melnick & Adelberg’s Medical Microbiology, 28th Ed., Chapter 3, p. 48
- They play roles in cell wall maintenance, ion regulation, and adherence.
- Gram-negative bacteria have an outer membrane and lack teichoic acids.
- Acid-fast bacteria have a lipid-rich cell wall, and Mycoplasma species lack a cell wall entirely, hence they do not contain teichoic acids.
Reference: Jawetz, Melnick & Adelberg’s Medical Microbiology, 28th Ed., Chapter 3, p. 48
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