Learn about Proteins in this educational video from dizzo95.
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Male Speaker: Proteins are large molecules made up of amino acids that serve many vital functions in living organisms. Proteins consist of chains of amino acids linked together by peptide bonds. The order in which the amino acids are strung together determines the type of protein and there are many types. Enzymes trigger chemical reactions between cells. Hemoglobin, a red blood cell protein helps with the transport of oxygen. Antibodies fight off engraving substances such as viruses. Collagen and keratin are structural proteins found in bones, tendons, skin and hair. In humans, hormones are protein messengers that regulate metabolism, growth and maturation, reproduction, digestion, and other basic functions.