Question

biological macromolecules that make up cells have very important functions, many of which are interconnected.
consider the molecule shown in the box in this diagram. a series of exactly three of these molecules is directly responsible for the proper placement of what?
○ amino acids in a polypeptide chain
○ cellulose fibers in a plant cell wall
○ fatty acids on a glycerol backbone
○ glucose monomers in a starch molecule

Explanation:

The molecule in the box is a nitrogenous base (guanine, a purine). Three consecutive nitrogenous bases form a codon, which pairs with complementary anticodons on tRNA to correctly place amino acids in a polypeptide chain during protein synthesis. The other options involve carbohydrates or lipids, which do not rely on this type of nitrogenous base pairing system for their structure.

Answer:

amino acids in a polypeptide chain