Bch4024 test 1 questions - Study guides, Class notes & Summaries

BCH4024 TEST 1 QUESTIONS WITH COMPLETE SOLUTIONS diffusion-limited process: - Answer-reaction rate is determined by how fast reactants collide the Protonation and deprotonation of macromolecules? - Answer-acid/base groups on surface react immediately acid/base groups deep inside may never ionize hydrogen bonds of buried helices and beta-sheets require the "conformation breathing" -local unfolding Pepsin - Answer-a digestive enzyme secreted into gastric juice, having a pH of 1.5 a...

BCH4024 TEST 1 QUESTIONS WITH COMPLETE SOLUTIONS Isoelectric Point of Amino Acids - Answer-At the isoelectric point (pI = pH), average charge equals 0 The Henderson-Hasselbalch Eqn. can be applied at pI for both equilibrium dissociations. Two dissociation reactions involve the net zero charge species HAH+ <--> HA + H+ HA <--> A- + H+ (Isoelectric Point of Amino Acids) Two Henderson-Hasselbalch equations can be summed to solve for pI. - Answer-2pI=pKa1+ pKa2 +log [HA] +log...