| Investigation 5.1Why Do Cells Need Energy? | 1. Do you think some cells need more energy than others? | | 2. Which type of cell is more active, a cell in your brain that does your thinking or a cell that stores fat in your body? | | 3. Which do you think needs more energy? | |
| Talk with your group about your answer and then come up with a list of functions that different cells might perform that would require energy. | | Write them on your whiteboards. | |
| Now share your ideas with the rest of the class. Defend your answer if necessary. | | Do other students have ideas that you find interesting or possible? | |
| Look back at your model of energy and all your ideas about the cell. What new ideas do you now have? | |
| Draw in your lab book where you think energy is transferred from the food to a usable form. | |
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