Compounds In Cells Nucleic Acid Proteins Carbohydrates Lipids ATP DNA “blueprints” of life DNA Tells the cells how to make proteins Subunits called nucleotides Carbohydrates Made of sugars Can be simple or complex Starch in plants Source of stored energy Lipids Fat in animals Oil in plants One type forms much of the cell membrane Cannot mix with water ATP Major fuel used for the cell’s activities Adenosin triphosphate Energy in lipids and carbohydreates is transferred to this molecule Proteins -Enzymes -Subunits called amino acids -hemoglobin -make up spider webs and hair Compounds In Cells