Unit 7: Protozoa and Helminths
Pro/Eukaryotes include Fungi, Algae, Protozoa, and Helminths. This unit discusses protozoa and helminths, which are parasites. Parasites are, by definition, organisms that benefit only at the expense of their living hosts. Protozoa are usually single-celled organisms that have highly complex life cycles. Helminths (also known as parasitic worms) live inside their hosts, often in intestinal tracts, where they hijack their host's nutrient absorption pathway. An astounding number of people are believed to be infected with helminths; most estimates claim that at least 1 billion individuals have been affected!
Completing this unit should take you approximately 14 hours.