Biology 1002B Lecture Notes - Lecture 5: Unsaturated Hydrocarbon, Lipid Bilayer, Alkane
26 Jan 2016
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Document Summary
5. 1 an overview of the structure of membranes. Plasma membrane acts as selectively permeable barrier, allowing for uptake of nutrients and elimination of waste products while maintaining protected environment for cellular processes. 5. 1a a membrane consists of proteins in a fluid of lipid molecules. Lipid molecules in the membrane are highly dynamic. Most membranes contain an assortment of types of proteins, including those involved in transport/attachment, signal transduction, and processes such as electron transport membrane, so do not move. Small number of membrane proteins anchor cytoskeleton filaments to the. Membranes carry different proportions of lipid and protein. 5. 1b experimental evidence in support of the fluid mosaic model. Fluidity of membranes shown through the frye-edidin. Often the fracture splits bilayers into their inner/outer. Membrane lipid: diverse group of water-insoluble molecules including fats, phospholipids, and steroids. Keeping membranes in fluid state is important to membrane function.
