BIOL 1410 Lecture Notes - Lecture 4: Cytoskeleton, Cell Nucleus, Microtubule
17 Nov 2014
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Biol 1410: anatomy of the human body - lecture 4: the cellular level of organization. The basic structural and functional unit of the body. Is able to perform all basic life functions. Also called the plasma membrane and the plasmalemma. Selectively permeable only allows certain substances to pass through. Hydrophobic fatty acid tails divides icf + ecf. Cholesterol o o scattered throughout membrane contributes to the stability/fluidity of the cell membrane at low temperatures, makes it more fluid. At high temperatures keeps it fluid. (remember how cells change the number of cholesterols depending on temperature) Types of protein = type of function of cell. 2 types: i. integral proteins embedded within membrane have hydrophobic + hydrophilic regions transmembrane proteins membrane extend across entire. 5: peripheral proteins attached to either surface of integral proteins. Found only on the outer surface of cell membrane. Cen either be bound to: proteins (glycoproteins, lipids (glycolipids) o.
