BIO 124 Study Guide - Final Guide: Symbiogenesis, Red Algae, Golgi Apparatus

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Are mulicellular with sexual life cycles and can be photosyntheic. Mitochondria was engulfed by an archaea cell - at the ime was really a bacteria with folding"s. Plasids: self replicaing bodies in plants o o. Were engulfed by archaea cells and were really cyanobacteria then - allowed for anaerobic cells to survive in aerobic condiions. Mitochondria evolved irst/was engulfed before plasids o o. Also went through secondary endosymbiosis to diversify - irst were red and green algae. Cyanobacteria becomes engulfed and becomes plasic - which evolves into red and green algae which is then engulfed again and goes through secondary endosymbiosis - how eukaryotes became mulicellular. Plasids have 2 membranes (gram -) and when they were engulfed, they became 4 membranes. Can be atached by proteins or have shared cell walls. Volvox: monophyleic group/lineage of a green algae that evolved into mulicellularity. The only change from unicellularity to mulicellularity is from changes in exising genes not new genes.

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