HYDROGEN (H), OXYGEN (O) AND NITROGEN (N)…97.5% OF OUT BODY • CALCIUM (CA) IN BONES, ~2% • OTHER ELEMENTS INCLUDE: IRON (FE), SODIUM (NA) AND POTASSIUM, ≤ 0.5% 5 Proteins are made of hundreds amino acids bonded together Proteins are the “movers and shakers” of cells and form many cell structures 6 WHAT IS A PROTEIN? • HAIR, SKIN, ENZYMES, HORMONES, ETC. • BUILT FROM AMINO ACIDS LINKED BY PEPTIDE BONDS TO FORM POLYPEPTIDES • MORE THAN 100 AMINO ACIDS CAN BE MADE IN THE LAB ONLY 20 ARE FOUND IN…
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