BIO 1130 Lecture Notes - Lecture 6: Endoplasmic Reticulum, Nuclear Membrane, Endomembrane System

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

Document Summary

Start of the proterozoic involves the appearance of aerobic single celled eukaryotes. Eukaryote autapomorphies: nuclear envelope, endomembrane system the endoplasmic reticulum (rough and smooth, mitochondria, multiple chromosomes and diploidy, centrosomes. As invagination occurs from two sides, it will engulf the nuclear material, thus forming a double membrane envelope (now called the nuclear envelope) Usually cytoplasm would have to deal with all the cellular functions, however in eukaryotes they have a separate compartment in where specialized dna replication and functions would occur. Therefore, two different areas have unique different functions. However, connection to the outside environment was lost, thus there is an endoplasmic reticulum, what"s important about it is that it acts as a back room . Now it can add a whole series of chemical functions. Some of the bacteria was capable of engulfing other bacteria. Theory of how bacteria swallows another bacteria breaking down carbon bonds to produce atp.