How is each group classified? Parasitic worms Fungi Protozoa What is their role in nature? Parasitic worms Fungi Protozoa Describe the functions of each of the following eukaryotic cell structures. EXTERNAL Glycocalyx Plasma membrane Flagella Cilia Pseudopods INTRACELLULAR Nucleus Ribosomes Cytoskeleton ER Golgi Apparatus Vesicles Vacuoles Mitochondria Chloroplasts What are the differences between a eukaryotic and prokaryotic cell membrane? Prokaryote? Eukaryote?.