Sponges have flagellated cells called that line their internal chambers and create water flow to capture food. collar cells choanocytes endoderm mesoderm

ionic bonds are two oppositely charged ions that attract. a sodium ion has a 1 positive charge; a chloride ion has a 1 negative charge. sodium and chloride have oppostive charged ions that attract which forms an ionic bond. a chemical bond formed when two atoms share electrons is called

it marks things for degradation via the proteasome. it alters there celluar location.