BIOL 30100 Lecture 3: Chapter 3: Cellular Level of Organization
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30 Aug 2018
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Forms outer boundary: the lipid bilayer, phospholipids are ampiphatic with polar head and tail non pole, cholesterol mildly ampiphatic provides some rigidity. Glycolipids found only in carbohydrate on outer layer polar head. Ion channels: carriers integral for must be important for nervous system can be must transports stuff. 1 or many in by confirmational: receptors, enzymes v. linkers. 5: membrane fluidity double bonds amount cholesterol on fa creates kink, membrane permeability. Q coa steroids: selective permeability to nonpolar and unchargedmouac. es. Nat: electrochemical gradient a slight neg charge inside and positive outside. 6: no atpneeded normally move with gradient diffusion. Bring stuff in i send stuff out: principles of diffusion high j low c, five factors: d steepness of gradient d mass rate temp. Surface area distance substance x: osmosis diffusion with the of semi permiable membrane movement water ferrough a. 7: osmotic pressure solution pressure that develops in due osmosis to a.