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Chapter 28 The Origins of Eukaryotic Diversity

Campbell Reece A/P Biology

AB
The five kingdoms of eukaryatic organismsProtista, Plantae, Fungi, and Animalia
Protista mostly consits ofunicellular eukaryotes
Mixotrophic: (ex. Euglena)Protists that are photosynthetic yet also require heterotrophic nutritition
Categories of Protists: (ex. Animal Like, Fungus Like, Plantlike)Protozoan (Ingestive), Absorptive, Alge (Photosynthetic)
Syngamy: (for gene shuffling)The Union of Two Gametes
____________ is prominent in ProtistsHaploid Stage (main vegatative stage)
Cycts are analogous to ________ of bacterial prokaryotesEndospores
Plankton:Wandering communities of protist organisms near surface
Phytoplankton:Planktonic algae along with cyanobacteria
Eukaryotes have a membrane enclosed nucleus, endomembrane system, mitochondria...chlorplasts, cytoskeleton, 9+2 Flagella, multiple chromosomes of linear DNA, and life cycles
Endomembranes:Foldings that allow for compartamentalization and cell complexitiy
The Nuclear Envelope, ER, and Golgi Apparatus evolved fromfolding of endomembranes
Serial Endosymbiosis:Process where mitochondria and chloroplasts (formerly small proks.) living within larger cells
Endosymbiont:The cell that lives inside the host cell
Endosymbiosis occured becauseinternal prey or parsites were not digested
Both chloroplasts and mitochondria...are the appropriate size o be descendants of bacteria
Mitochondria and Chloroplats replicate by...a splitting process reminiscent of binary fission in bacteria
The eukaryotic cell is a "______" of prokaryotic celsChimera
Endosymbiosis is proved by:SSU-rRNA Comparisons, Similar Replication + Size, Current Symb. Relations, and 9+2 Flagella
Transformation (Relates to Endosymbiosis):Endosymbionts transfer their DNA to the host
Secondary Endosymbiosis: (leaves trace of mitochondria+membrane)Primary Endosymbionnt Host becomes and Endosymbiont
Eukaryotes are more _____ while Prokaryotes are more like a ________.Linear, Mangrove tree



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