Purines and pyrimidines are_________________? February 7, 2021 / By Preparation Point / Top 20 MCQs Share on WhatsApp Share on Facebook Share on Twitter Share on LinkedInA. Enzymes B. Nitrogenous bases C. Carbohydrates D. Lipids Share this:TwitterFacebookMoreTelegramWhatsAppLike this:Like Loading... Related Share on WhatsApp Share on Facebook Share on Twitter Share on LinkedIn