Bch 361 exam 2 questions - Study guides, Class notes & Summaries

BCH 361 EXAM 2 QUESTIONS WITH ALL VERIFIED ANSWERS What is the purpose of the oxyanion hole in chymotrypsin? - Answer-The oxyanion hole is a structure at the active site of chymotrypsin that stabilizes the tetrahedral intermediate in the proteolysis reaction and facilitates the formation of the acyl-enzyme intermediate. What caused a "burst" of activity followed by a steady-state reaction when chymotrypsin was studied in the milliseconds subsequent to mixing the enzyme and substrate? - An...

BCH 361 EXAM 2 QUESTIONS WITH ALL VERIFIED ANSWERS The DNA in each human cell if connected and fully extended will be meters long. - Answer-2 Supercoiling accounts for some of the compaction of the DNA, but further compaction occurs by to the DNA. - Answer-binding certain proteins chromatin - Answer-is the entire complement of a cell's DNA and its associated proteins. histones - Answer-are highly basic proteins that are components of chromatin. Histones (an octamer that contains two...

BCH 361 CH 2 EXAM QUESTIONS WITH ALL CORRECT ANSWERS Under appropriate conditions, protein folding proceeds: a) amphipathically. b) due to the hydrophobic effect. c) spontaneously. d) both amphipathically and due to the hydrophobic effect. e) both spontaneously and due to the hydrophobic effect - Answer-e You have a mixture of proteins with the following pKa's. Which of the statements below is TRUE? Protein X pKa = 2 Protein Y pKa = 6 Protein Z pKa = 10 a) At a pH of 6, p...

BCH 361 EXAM 2 Study Questions with 100% Correct Verified Solutions| Latest Update

The ΔG of a reaction depends only on the free energy of the products (the final state) minus - Answer the free energy of the reactants (the initial state). The ΔG of a reaction is independent of the path (or molecular mechanism) of the transformation. The mechanism of a reaction has no effect on ΔG. The ΔG provides no information about the rate of a reaction. - Answer A negative ΔG indicates that a reaction can take place spontaneously, but it does not signify whether it will proceed ...

BCH 361 CH 2 EXAM QUESTIONS WITH ALL CORRECT ANSWERS The van der Waals contact distance between two participating atoms is usually in the range of angstroms. a) 0.5 to 0.8 b) 2 to 5 a) 1 to 3 d) 4 to 6 e) 3 to 4 - Answer-e In an electrostatic interaction, the strength of the bond is: a) proportional to the charges on the two interacting atoms. b) proportional to the dielectric constant of the medium. c) inversely proportional to the distance between the two atoms. d) Both the first ...