BIO 1140 Lecture Notes - Lecture 6: Glycolipid, Phospholipid, Hydrophile
24 Aug 2016
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5 reasons: boundary: selective permeability, organize and scaffold, regulate solute transport, receive signals, communication. Membranes can have an outer cell wall in addition to the actual membrane. Membranes used to insulate and create an extra barrier. How thick fluid or rigid membranes are. Unsaturated fatty acids cause it to bend so that it is not so tightly packed and therefore allowing things to get through. Each phospholipid will have a different polar head. The structure attached to it will change the polarity. Each phospholipid can rotate and change position, which can make gaps. Both layers making up the membrane are different in how they are organized and what phospholipids that make them up. Because there is a hydrophilic (polar heads) and hydrophobic area (inside of the membrane). Need a layer that is good for communication and a layer for holding organelles. Two leaflets of phospholipids make up the membrane. 1 polar head and 2 hydrocarbon tails make up one phospholipid.
