In science class harry and classmates are performing a controlled scientific investigation. the teacher has already pick a topic and testable question for the class to study and has provided background research on the topic. before performing the investigation what the students must to do first ?

Proteins are linear polymers built of monomer units called amino acids. The function of a protein is directly dependent on its three -dimensional structure Remarkably, proteins spontaneously fold up into three-dimensional structures that are determined by the sequence of amino acids in the protein polymer.