BIO 100 Lecture Notes - Lecture 6: Cell Membrane, Phospholipid, Cholesterol
1 Feb 2017
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Advantages to being multi-celled continued: many specializations of functions, less prone to disease, prevent the death of organisms, plasma membrane: cytoplasm ration (surface area: volume) Rule: volume increases faster than surface area. You always want to maximize your surface area. You do that by making smaller cells. Water is sometimes called the universal solvent: meaning that it dissolves more than anything other liquid when something is in it. Plasma membrane: most basic purpose is to regulate what enters and exits, proteins *** Hydrophilic layer: loves water: two layers of phospholipid with. Cholesterol: a fat, embedded in the fat with the proteins in the tails of the plasma membrane. Is produced by the liver, your body produces as much as you ever need: however, you can obtain it from certain types of foods. Meat, dairy: too much = heart attack. How organs and blood and others can tell it belongs to you or not.
