Exhibit 4B Refer to Exhibit 4B.The type of bonding labeled "N" in these figure is:
A) Hydrogen bonding of the peptide backbone
B) Covalent bonding involving the R-groups
C) Hydrophobic interactions
D) Metal ion coordination
E) Electrostatic attraction

Question

Exhibit 4B  Refer to Exhibit 4B.The type of bonding labeled "N" in these figure is:
A) Hydrogen bonding of the peptide backbone 
B) Covalent bonding involving the R-groups 
C) Hydrophobic interactions 
D) Metal ion coordination 
E) Electrostatic attraction

Quizplus · Accepted Answer

The type of bonding labeled "N" in this figure refers to hydrogen bonding of the peptide backbone, specifically between the amino (-NH-) and carboxyl (-CO-) groups. This is a non-covalent interaction that helps stabilize the secondary structure of proteins, such as alpha helices and beta sheets.