Cell Biology Exam II

Cell Biology Exam II - Cell Biology Exam II Review...

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Cell Biology Exam II Review - Eukaryotic Cells Contain a Basic Set of Membrane-Enclosed Organelles – The nucleus is surrounded by a double membrane called the nuclear envelope. It communicates with the cytosol through the nuclear pores. Nuclear membrane is continuous with the endoplasmic reticulum. The ER is the site of most new membrane synthesis. Rough ER makes protein Smooth ER makes steroids and is involved in Detox Golgi Apparatus – Receives ER products, modifies them and then ships them off. Receives membrane from ER. - Membrane Bound Organelles Evolved in Different Ways – Eukaryotic Cells could not have evolved without internal membranes Golgi, ER, Lysosomes all have nuclear membranes. They all evolved from the invagination of the plasma membrane, thus they are all components of the endomembrane system. o Golgi, Er, Lysosome Endomembrane system - Protein Sorting - With mitochondria, chloroplasts, nucleus, peroxisomes and ER, proteins are delivered from the cytosol. With Golgi, lysosomes and endosomes, proteins are delivered from the ER. GEL-ER Chloroplasts and Mitochondria have post-translational translocation of unfolded proteins. Translocation requires ATP chaperone proteins to fold the protein
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This note was uploaded on 05/04/2008 for the course BIOL 3510 taught by Professor Chapman during the Spring '08 term at North Texas.

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Cell Biology Exam II - Cell Biology Exam II Review...

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