| A | B |
|---|
| the sub unit of proteins | amino acids |
| twenty | the number of amino acids available to make proteins |
| 50 amino acids long | the length of a small protein |
| 100,000 | the number of amino acids in a large protein |
| 5 proteins found in humans | antibodies, hemoglobin, enzymes, muscles, hair |
| hemoglobin | a blood protein that brings oxygen to the cells |
| antibody | protein that fights disease |
| enzymes | proteins that speed up chemical reactions |
| foods with proteins | fish, meat, eggs, nuts, soybeans |
| simple carbohydrates | chains of 1-3 sugar molecules |
| complex carbohydrate | chains of 4-200 glucose molecules |
| food source of simple carbohydrates | fruits |
| source of complex cabohydrates | pasta, potato, bread |
| cells use carbohydrates for ______ | energy |
| sugars, startches, and lipids give the cell _______ | energy |
| Lipids | cannot mix with water |
| a liquid lipid usually made by plants | oil |
| a solid lipid usually made by animals | fat |
| phospholipid | a lipid used to make cell membranes |
| Use of lipids in body | nerve cells, energy storage, hormones |
| Hormones | chemicals which stimulate growth and development |
| word describing the round end of a phopholipid | hydrophilic |
| the long end of a phospholipid | avoids water |
| Two examples of nucleic acids | DNA and RNA |
| the sub unit of DNA | nucleotide |
| DNA | directions for all cell activities |
| sources of fat | butter, red meat |
| source of lipid | corn oil |
| ATP | the only source of energy a cell can use directly |
| glycogen | a form of energy stored in animals' livers |
