$47$

Multiple Choice

$1$ point

The three$-$dimensional conformation of a protein may be strongly influenced by amino acid residues that are very far apart in sequence. This relationship is in contrast to secondary structure, where the amino acid residues are:

invariably restricted to about $7$ of the $20$ standard amino acids.

generally near each other in sequence.

always side by side.

often on different polypeptide strands.

usually near the polypeptide chain's amino terminus or carboxyl terminus.