Cellulose is an especially strong polymer that is difficult to digest because __________. (Check all that apply.)

its long, branched chains make it insoluble

β 1→4 linkages of glucose monomers produce very strong chainsβ 1→4 linkages of glucose monomers produce very strong chains

α 1→4 linkages of glucose monomers produce very strong chainsα 1→4 linkages of glucose monomers produce very strong chains

its long, unbranched chains form tough fibers

its fructose monomers form very strong bonds