CHEM 2770 Midterm: CHEM 2770 277Oct-2003 Exam

• School: University of Manitoba
• Department: Chemistry
• Course: CHEM 2770
• Professor: All

Document Summary

Page: 3 of 7: to 50 ml of a 0. 1m solution of alanine at ph=pi, was added x ml of. The new ph was found to be equal to the pka for its amino group. After mixing, the ph of the solution was found to be 4. 28. What is the pka of the weak acid: 4. 28 b) 4. 40 c) 4. 76 d) 5. 04 e) 5. 18, the linear sequence of peptide-bonded amino acids in a polypeptide is called , primary structure b) secondary structure. A) are found on the outside of the helix. B) generate h-bonds to stabilize the helix: stack within the interior of the helix, cause only right-handed helices to form, alternate between the inside and outside of the helix. A) the overall shape of a polypeptide chain. B) the sum of the secondary and tertiary interactions. D) the relative orientation of one polypeptide to another polypeptide in a multi-subunit protein.