Biology - Macromolecule CER Claim: Elephants and Lions need energy to survive. Evidence: Use Tables 1 and 2 (on page 1 of “Macromolecules: What are the building blocks of life”) to provide data. Elephants use carbohydrates and protein for energy. Elephants eat 3 different types of hay. Each type of hay has mainly carbohydrate plus smaller amounts of protein. Hay has no lipid. Lions use protein and fat for energy. Lions eat 3 different types of animal (meat). Each type of animal has mainly protein plus smaller amounts of lipid. The lion foods listed have no carbohydrate. Reasoning: Use the Read This! (on page 2 of “Macromolecules: What are the building blocks of life”) and Models 2, 3, and 4 to support your reasoning. Elephants During chemical reactions such as digestion, the bonds in large molecules are broken and energy is released. Since elephants eat hay, they are getting carbohydrates and proteins to use for energy when the hay is digested. The energy released when the food molecule bonds are broken can be used for survival. Lions During chemical reactions such as digestion, the bonds in large molecules are broken and energy is released. Since lions eat beef, deer, and pig meat, they are getting proteins and lipids to use for energy after digestion. The energy released when the food molecule bonds are broken can be used for survival.