Pinocytosis

Pinocytosis:

A) is engulfment of large particles by the cell.
B) occurs in protozoans and algae but not in more complex organisms.
C) involves the specific binding of molecules to receptors on the cell surface.
D) is the nonspecific uptake of fluids by pinching inward of the plasma membrane.
E) is movement of molecules against the concentration gradient through a permeable membrane.