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Unit B: Cells and Systems Topic 5: Cell Specialization and Organization A. Specialized Cells 1. Different cells have different __________ and functions: B. The Advantages of Being Multi-cellular 1. Multi-cellular __________ can: a) b) c) d) e) Live in a wide __________ of environments Grow very __________ Obtain their energy from a wide variety of foods Have __________ bodies Specialize functions and work in __________ with other cells C. Cell Organization 1. Cells with the same structure and function form __________ 2. Tissues __________ organs 3. Organs work __________ in organ systems 4. Systems work together to form an organism D. Tissue 1. Tissues are groups of similar cells that work together, having similar __________ and function. (Figure 2.22 and Figure 2.23 – page 141) E. Organs 1. Each __________ is made up of several tissues all working together. 2. They are distinct structures in the body that perform particular __________ . (Plants have organs as well – roots, stem and leaves) F. Systems A. Organs work together to perform activities that help the organism function as a __________ . B. Plants typically have __________ systems (root system and shoot –stems and leaves – system). C. A reproductive system (flowers, fruits and seeds) is often __________ at certain times as well.