1. 7-4 Diversity of Cellular Life Page 190

2. A. Unicellular Organisms 1. Organisms that are made up of only 1 cell. – Examples: Yeast, Amoeba, Volvox Aureus (Green Algae

3. B. Multicellular Organisms 1. Organisms made up of many cells.

4. B. Multicellular Organisms 2. All the cells need to have a way of communicating with each other.

5. B. Multicellular Organisms 3. Cell specialization allows cells to develop in different ways to perform different tasks.

6. C. Levels of Organization 1. Cells  Tissues  Organs  Organ Systems

7. C. Levels of Organization 2. Tissues are groups of similar cells that perform a specific function.

8. C. Levels of Organization 3. Many different tissues work together to become organs.

9. C. Levels of Organization 4. A group of organs working together is an organ system.