The amoeba is made of one cell.
ID isn't even genuine science, and it's an affront to religion too: their hypotheses make God look moronic and compel him to things that we don't yet get it. What ID advocates do is they discover something that isn't yet comprehended (at a certain point, it was a bacterial flagellum) and essentially wave their hands and say "God did it!", and afterward when that thing has been legitimately clarified by genuine researchers, they discover something else that hasn't been clarified yet and rehash the process.
Answer: phagocytosis; lysosomes
Collar cells in the sponge digest food through phagocytosis or by using enzymes that come from the lysosomes. Bacteria are among the elements that are broken down by phagocytosis with the help of some specific enzymes found in lysosomes.