(i) The peptide backbone is very flexible, and has so many hydrogen bonding groups, that any conformation will result in good hydrogen bonding geometry TRUE / FALSE
(ii) The ability of secondary structural elements to form hydrogen bonds reflects the fact that hydrogen bond formation between the N-H and C=O groups drives protein folding TRUE / FALSE
(iii) The attraction between the peptide N-H and C=O groups is so strong that the chain always adopts conformations in which they are brought together TRUE / FALSE
(iv) When a protein molecule folds, polar groups that are removed from water need to make compensating hydrogen bonds within the folded structure. The Ramachandran diagram reflects the fact that the peptide chain can fold in water without losing significant hydrogen bonding energy TRUE / FALSE