Final answer:
True. Many multicellular organisms can break down cellulose using the enzyme cellulase.
Step-by-step explanation:
Many multicellular organisms can break down cellulose molecules, so the statement is true.
While human digestive enzymes cannot break down cellulose, certain animals like cows, koalas, buffalos, and termites have specialized bacteria and protists in their digestive systems that secrete the enzyme cellulase.
These cellulases can break down cellulose into glucose monomers that animals can use as an energy source.