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	34   Directed Inquiry Explore What do yeast cells need to grow? 36   How to Read Science Draw Conclusions 37     You Are There! 38      Lesson 1 What is inside a cell? 39      Lesson 2 How do cells work together? 42      Lesson 3 How do organs work together? 46     Guided Inquiry Investigate How can you make a model arm? 50      Large Numbers of Small Cells 52     Chapter 2 Review and Test Prep 54      Physical Therapist 56