LIFESCI 1 Lecture Notes - Lecture 11: Cyanobacteria, Red Algae, Eukaryote
Document Summary
Fundamental features: larger, cytoskeleton, nuclear envelope, multicellularity, asexual reproduction through mitosis or cell division, sexual reproduction meiosis. Protist: eukaryotic organism that is not an animal, plant, or fungi. Heterotrophic protist: protozoans: molecular phylogenies of protists. Bikonta: all protists contain a nucleus. Endosymbiosis: an organism of one species lives inside the cells of an organism of another species: mutually bene cial. Mitochondria: host cell supplies bacterium with protection and c: bacterium supplies host cell with atp (respiration/energy production) Chloroplast: host cell supplies bacterium with protection and access to light. !1: bacterium supplies host cell with o2 and c (photosynthesis) Evolution of mitochondria: similar size as proteobacteria, replicate via ssion, have their own genomes, genomes are circular, have double membranes. Origin of chloroplasts: symbiosis: chloroplasts evolved from cyanobacteria living as endosymbionts with eukaryotic cells. Protists importance to humans: impacts on human health: diseases, ecological importance.
