BIOL 1090 Study Guide - Midterm Guide: Inner Mitochondrial Membrane, Integral Membrane Protein, Peripheral Membrane Protein
1 Mar 2013
School
Department
Course
Professor
Document Summary
Two classes of cells on earth: prokaryotic. Virus outside of a cell is called a virion. Virion is comprised of a small amount of dna/rna and a protein capsule (capsid) Very small compared to other eukaryotic and prokaryotic cells. Can bind to a cell surface via specific proteins: narrow host versus wide host range. Bilayer of amphipathic lipids: amphipathic: both hydrophilic and hydrophobic. Layer of lipids interacting with another layer. Biological membranes contain a hydrated lipid bilayer. All membranes share common properties: approximately 6nm thick (with associated water, stable, flexible, capable of self assembly. Different membranes contain different types of lipids and proteins. Membranes have different functions, in different cells and within an individual cell. Inner membrane of mitochondria contains a very high concentration of protein because it is a metabolic centre (atp synthesis) Myelin sheath of a neuron contains very low amounts of protein and consists of layers of plasma membrane wrapped around the nerve axon for insulation.
