BIO 1130 Study Guide - Quiz Guide: Nuclear Membrane, Endomembrane System, Archean

• School: University of Ottawa
• Department: Biology
• Course: BIO 1130
• Professor: Jon Houseman

Document Summary

These are defining ancestral characteristics of all eukaryote descendants. Hallmark of proterozoic: appearance of eukaryote cells. (2500 550 million years ago) Two billion years (over half of the life of the planet); huge array of organisms. Takes this long to perfect a variety of single cells. End of the archean is marked by the appearance of the aerobic bacteria. Archeans are still present, but found in places where there is no oxygen. Two lineages from single cell eukaryotes move on: plants and animals/fungi. Luca would not have been an archean, not a bacterium. Part of a larger system called the endomembrane system. Invagination of plasma membrane that surrounds the nuclear material. Replication of dna, transcription now in its own environment within double membrane. This is unlike the bacteria, where everything happens in cytoplasm. Origins of completely different gene regulation system. Rer) that can allow separate movement from the cytoplasm.