Most cell membranes are composed principally of ? February 3, 2021 / By Preparation Point / Biology Mcqs Share on WhatsApp Share on Facebook Share on Twitter Share on LinkedInA. DNA ad protein B. Protein and Lipids C. Protein and Chitin D. Protein and RNA Share this:TwitterFacebookMoreTelegramWhatsAppLike this:Like Loading... Related Share on WhatsApp Share on Facebook Share on Twitter Share on LinkedIn