<prompt> Which statement is true for both pinocytosis and phagocytosis?Involves the recruitment of actin filamentsOccurs spontaneously and nonselectivelyEndocytotic vesicles fuse with ribosomes that release hydrolases into the vesiclesIs only observed in macrophages and neutrophils  <response>: Both pinocytosis and phagocytosis involve movement of the plasma membrane. Pinocytosis is cell drinking, whereas phagocytosis is cell eating. Both events require the recruitment of actin and other cytoskeleton elements. Phagocytosis is not spontaneous and is selective, being triggered by specific receptor-ligand interactions and Endocytotic vesicles fuse with ribosomes that release hydrolases into the vesicles 