| A | B |
|---|
| Keratin | Protein found in skin, hair, and nails |
| Hemoglobin | Protein found in blood, based on the element iron, allows Oxygen to be carried and delivered to cells |
| Antibodies | Proteins which serve as signal molecules in the immune system. (Marking invading microbes) |
| Insulin | Protein in blood which serves as a hormone to regulate blood sugar |
| Enzymes | Class of proteins which makes chemical reactions in the body possible |
| Collagen | Protein found in skin and other tissues which gives them strength (body's rebar) |
| Saturated Fat | Full of Hydrogen- too much leads to artery build up and cardiovascular disease |
| Unsaturated Fat | Not full of Hydrogen- some even help to limit arterial buildup |
| Phospholipids | Chief component of cell membranes |
| Steroids | 4 or 5 carbon rings- form the |
