Multiple choice

Which of the given prokaryotic structure is found in Bacillus but absent in Escherichia, helps to give negative charge to its cell wall?

  1. LPS

  2. PHB

  3. Endotoxins

  4. Teichoic acids

  5. Braun’s lipoprotein

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

They are polymers of glycerol or ribitol joined by phosphate groups and are not present in gram negative bacteria like Escherichia. They give the gram positive cell wall of Bacillus an overall negative charge due to the presence of phosphodiester bonds between teichoic acid monomers.