BIOL 102 Chapter Notes - Chapter 6: Structural Formula, Organic Compound, Saturated Fat
25 Aug 2016
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Bio 102 chapter 6 week 3 lipids, membranes and the first cells. Describe the structure and function of the main classes of lipids. Describe the structure and function of biological membranes. Describe the effects of temperature on membrane function. Describe the types and general properties of membrane proteins. Describe the various aspects of membrane transport. Plasma membrane/ cell membrane: separates life from non-life. Surrounds the cell interior and separates interior from external environment. Plasma membrane serves as selective barrier for the cell. Plasma membrane sequesters appropriate chemicals in an enclosed area which allows the reactants to collide more frequently chemical reactions needed for life occur more frequently. First cell of life was responsible for one of the 5 key cell attributes of life presence of a barrier that defines the cell & regulates the passage of material. Evolution of first self-replicating molecule and membrane could have occurred together. Phospholipids are amphipathic have a hydrophilic & hydrophobic region.
