Understand that proteins are macromolecules composed of amino acids linked by peptide bonds, and they perform a wide range of functions in biological systems.
Recognize that one of the primary functions of proteins is to transport molecules, such as oxygen. Hemoglobin is a protein in red blood cells responsible for oxygen transport.
Identify that proteins provide structural support. For example, collagen is a protein that contributes to the structural integrity of connective tissues.
Learn that proteins act as enzymes to catalyze biochemical reactions. Enzymes are proteins that speed up chemical reactions without being consumed in the process.
Clarify that storing genetic information is not a function of proteins. This function is primarily carried out by nucleic acids, such as DNA and RNA.