BSC 196 Lecture Notes - Lecture 3: Green Algae, Phagocytosis, Phototroph
Document Summary
Fossil evidence dates their origins to about 2. 1 billion years ago. The most basal eukaryotes, including all that are not animals, plants, or fungi: require oxygen to live, and thus flourished after the great oxygenation event, protists are polyphyletic. They share a common ancestor, but do not include all of its descendants: protists are now grouped into many different kingdoms instead of one. The kingdoms of animalia, plantae, and fungi branch off from the protists: diverse in sizes, shapes, habitats, mobility, metabolism, and mode of reproduction, most are unicellular, nucleus: contains dna, the genetic material. Engulf cells through phagocytosis (amoebas: heterotrophic, photoautotrophic, use photosynthesis in chloroplasts (green algae, mixotrophic, use both of these strategies (euglena) Saprophytic: decompose dead organic matter (slime molds, active: have structures for propulsion, cilia flagella/flagellum, pseudopodia, passive: go with the flow. The process of eukaryotic cell division: cells can be diploid (2x chromosome #) or haploid (1x chromosome #)
