BSC 300 Lecture Notes - Lecture 3: Exergonic Reaction, Cytoskeleton, Membrane Potential
18 Apr 2018
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[(cid:3032)(cid:3030)(cid:3047)(cid:3041)(cid:3047)(cid:3046): keq = (cid:3117)(cid:3118)=[(cid:3004)][(cid:3005), test tube reaction (a b) eventually reaches equilibrium, at which the rates of the forward and reverse reactions are equal (reaction arrows of equal length) [(cid:3005): p = protein, d = dna, p + d pd, kd = [][(cid:3005)] 50% non-ionized: weak acids: if pka - ph = 0, then 50% of the molecule is ionized and 50% is non-ionized. If the ph is higher than the pka = more ionization. If the ph is lower than the pka = less ionized: pka - ph = log [(cid:3041)(cid:3042)(cid:3041)(cid:3042)(cid:3041)(cid:3032)(cid:3031)] [(cid:3041)(cid:3042)(cid:3041)(cid:3042)(cid:3041)(cid:3032)(cid:3031): pka - ph = log, weak bases: if pka - ph = 0, then 50% of the molecule is ionized and 50% is non-ionized. If the ph is lower than the pka = more ionization. If the ph is higher than the pka = less ionization. Such events are called spontaneous, they can occur without the input of external energy.
