Multiple choice Bacterial cell wall consists of which of the following? NAG NAM NAG and NAM Cellulose - Reveal answer Fill a bubble to check yourself C Correct answer Explanation The major structural component of the cell wall is peptidoglycan, which is a complex molecule that is composed of alternating units of N-acetylglucosamine (NAG) and N-acetylmuramic acid (NAM) and is cross-linked by short peptides.