This document summarizes key sections from a chapter about protists. It describes the characteristics of protists, including that they are a diverse group of eukaryotic organisms found in moist environments. It also outlines different types of protists like amoebas, algae, diatoms, and flagellates. Additionally, it discusses how some protists can affect human health, providing examples like malaria which is transmitted through a mosquito vector, and treatments for diseases caused by protists.

1. Chapter 21 Protists Section 1: Characteristics of Protists Section 2: Protist Diversity Section 3: Protists and Health

17. Section 2 Protist Diversity Sporozoans Characteristics All sporozoans are parasitic and have complex life cycles.