Feedback: Multiple Choice Quiz 5

  All of the correct answers have a green check mark.
  Incorrect answers have the "red-lit" button next to your choice.
  1. Table 3.2 in Campbell lists all of the values. Ignore the detailed differences, but remember the values shown here.
  2. Only the Trp & Tyr combination is aromatic, a necessary feature for UV absorption.
  3. Asp is acidic while Ile and Pro are non-polar and hydrophobic. See Fig. 3.3 in Campbell.
  4. The isoelectric point is defined on pg 67 in Campbell.
  5. At pH 7.3, the amino group is positively charged and the carboxyl group is negatively charged.
  6. The incorrect answers all have significant errors. Can you change one word in each of these four statements so that they accurately refer to the peptide bond?
  7. The correct answer takes account of the fact that nine (9) waters are liberated during the condensation reactions.
  8. The first and fourth statements are incorrect. In the case of d, the α-carbon is not involved in the peptide bond.
  9. In the cis form, the two α-carbons on adjacent residues are really too close to each other.