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18 Nov 2019
Biochemistry
8. Peptide bonds resist rotation and are essentially planar because: a) the peptide bond has partial double bond character. D) bphragrning bet ppldebond fre planarity c) covalent bonds resist rotation. d) trans peptide bonds are lower in energy than cis peptide bonds. e) All of the answers are correct. 9. What is the charge of the peptide HRGWMY at pH2? (Use Table 2 provided. Assume that the microenvironment of the ionizable groups does not affect the values in the table) a) +3 b) -1 c) +1 e) -3 10. Which is NOT a direct step in determining the structure of a protein by x-ray crystallography? a) Prepare a protein in a crystal form. b) Apply a constant magnetic field, and electromagnetic waves of varying frequency. c) Purify a protein. d) Obtain a diffraction pattern. e) Determine the electron density map corresponding to the diffraction pattern observed. 11.Which level(s) of protein structure involve(s) hydrogen bonds between amino acid side chains? a) primary b) secondary and tertiary c) tertiary and quaternary d) secondary e) quaternary
Biochemistry
8. Peptide bonds resist rotation and are essentially planar because: a) the peptide bond has partial double bond character. D) bphragrning bet ppldebond fre planarity c) covalent bonds resist rotation. d) trans peptide bonds are lower in energy than cis peptide bonds. e) All of the answers are correct. 9. What is the charge of the peptide HRGWMY at pH2? (Use Table 2 provided. Assume that the microenvironment of the ionizable groups does not affect the values in the table) a) +3 b) -1 c) +1 e) -3 10. Which is NOT a direct step in determining the structure of a protein by x-ray crystallography? a) Prepare a protein in a crystal form. b) Apply a constant magnetic field, and electromagnetic waves of varying frequency. c) Purify a protein. d) Obtain a diffraction pattern. e) Determine the electron density map corresponding to the diffraction pattern observed. 11.Which level(s) of protein structure involve(s) hydrogen bonds between amino acid side chains? a) primary b) secondary and tertiary c) tertiary and quaternary d) secondary e) quaternary
Jamar FerryLv2
24 Sep 2019