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Name Class Date Section 8.1 - Energy and Life (pg. 192-194) Compare/Contrast Table Use a compare/contrast table when you want to see the similarities and differences between two or more objects or processes. As you read, place an “X” in the box next to characteristics that are true of an autotroph or a heterotroph. One has been done for you. Autotroph Directly uses sunlight for energy Heterotroph X An oak tree is an example. A mushroom is an example. Makes its own food Consumes other living things to get energy Is capable of photosynthesis Heterotrophs and Autotrophs Look at the feeding relationships in each food chain. Each food chain contains an autotroph and one or more heterotrophs. Follow the directions. 1. Draw an X in the boxes that are autotrophs. 2. Draw a STAR in the boxes that are heterotrophs. grass worm robin grass mouse hawk grass rabbit cougar tree/shrub deer cougar coyote Name _________________________ Class _________________Date ______________ ATP ATP is the basic energy source of all cells. Energy is stored by cells when ADP is converted into ATP. Energy is released when ATP loses a phosphate and becomes ADP. Label the energy storing reaction and the energy releasing reaction. ADP + Phosphate ATP ATP ADP + Answer the questions. 1. How many phosphate groups are in one molecule of ATP? 2. How many phosphate groups are in one molecule of ADP? 3. What are the three parts of an ATP molecule? Phosphate