Which linear sequence of bonded atoms can be found in the backbone of polypeptides?
A) C-N-N-C
B) C-C-N-C
C) N-C-C-C
D) C-O-C-N

Question

Quizplus · Accepted Answer

The backbone of polypeptides consists of a repeating sequence of amino acids, where the C (carbon) atom of one amino acid is bonded to the N (nitrogen) atom of the next amino acid, forming a peptide bond. This sequence can be represented as C-C-N-C, with the C-C bond being the peptide bond and the N-C bond being the peptide linkage. Option A (C-N-N-C) and Option D (C-O-C-N) do not represent the correct sequence of atoms in the peptide backbone. Option C (N-C-C-C) is the reverse order of the correct sequence.

Which Linear Sequence of Bonded Atoms Can Be Found in the Backbone