The chemical reactions and pathways resulting in the formation of cellulose, a linear beta1-4 glucan of molecular mass 50-400 kDa with the pyranose units in the -4C1 conformation. [ GOC:mah https://www.worldcat.org/search?q=bn%3A0198506732 ]
Synonyms: cellulose synthesis cellulose formation cellulose anabolism cellulose biosynthesis