Proline differs from the other standard amino acids in that only proline:A.has a negative charge in its side chain.B.forms peptide bonds that are planar.C.contains a secondary amine in its backbone.D.is commonly found in flexible loop regions of folded proteins.

Proline is one of the amino acids found in proteins:CNCCHHHHHCHHHOHCOHow many sigma bonds are present in proline?

The amino acid Proline is encoded by 4 different codons. They differ:

What is meant with the “zwitterionic form” of an amino acid?b. Incorporation proline in a peptide chain induces new properties/restrictions typical for this amino acid.Describe two of these properties/ restrictions.c. The 3D structure of many proteins is lost when exposed to 0.1 M beta mercaptoethanol (CH2OH-CH2SH).

If a protein is imagined as a line then right end and left end represent :-N–terminal and C–terminal amino acid respectivelyC–terminal and N–terminal respectively.Ist amino acid and last amino acid respectivelyLast amino acid and C–terminal amino acid respectively

Your lab group is carrying out the Biuret test on various assigned solutions. When you come to proline, an amino acid, after you add the Biuret reagent, the solution appears blue. Your lab partners are puzzled by this result. How can you explain this result to them?Multiple ChoiceThis is a negative result because Biuret detects peptide bonds, and amino acids do not have peptide bonds.This is a positive result because Biuret detects amino acids.This is a positive result because Biuret detects proteins, and amino acids are components of protein.This is a positive result because Biuret detects amine functional groups, and amino acids possess these functional groups.