You arrive late to a biological seminar.However, just as you enter the room, you hear the speaker referring to the "amino end" and the "carboxyl end" of a macromolecule.Immediately, you know that they are talking about a:

Question

Quizplus · Accepted Answer

Proteins are composed of amino acids linked together, and each amino acid has an amino group (amino end) and a carboxyl group (carboxyl end).

You Arrive Late to a Biological Seminar