BIOL 1090 Study Guide - Final Guide: Integral Membrane Protein, Lipid Bilayer, Translocon

• School: University of Guelph
• Department: Biology
• Course: BIOL 1090
• Professor: Jaideep Mathur

Document Summary

Cell is the structural unit of life. All organism are composed of one or more cells. Cells arise form the division of other pre-existing cells. They are highly complex and organized: organization is consistently conserved through evolution. Can reproduce by making copies of themselves. Distinguishable by the way their dna is packaged: prokaryotic. Structurally more complex (large number of parts) Compartments: membrane bound components dedicated to specific function. Organelle: membrane bound compartment with characteristic content and a specific function. Separate section/part of something, considered to be in isolation. Compartmentalizes: divides a whole into separate parts/sections. Formed from the boundary and the contents. Example is a biological membrane: phospholipid bilayer made of phosphorus and a fatty acid chain in 2 layers: amphipathic: has both non-polar (hydrophobic) and polar (hydrophilic) regions, biological membranes contain a hydrated lipid bilayer. Nature if lipids in membrane: unsaturated increase fluidity, saturated reduces fluidity. Temperature: warming increases fluidity (liquid crystal, cooling decreases fluidity (crystalline gel)