Which of the following factors do not stabilize the 3-D structure of a folded protein? O Disulfide bonds O Van der Waals interactions O Hydrogen bonds O Electrostatic interactions O Hydrophobic bonds O Metal-ion protein interactions

Match the following terms to the correct definition: disulfıde bonds V [ Choose ] molecular force between non-polar molecules resulting from temporary dipoles covalent bonds between two cysteines salt-bridges intermolecular interactions that occur between the R groups of positively and negatively charged residues bonds between R-groups, carbonyls and amides that are not used in forming the secondary structure van-der Waals forces [ Choose ] internal hydrogen bonds [ Choose ]

Which of the numbered bonds in this polypeptide fragment are peptide bond(s)? (Select all that apply!)

Can you please explain how to solve this problem?