| A | B |
|---|
| Why do scientists use a classification system to organize living things? | So they can keep track of living organisms based on similarities and differences |
| What are some single celled organisms? | Paramecia, Amoeba, and Euglena. |
| What are three parts of the Cell Theory? | 1. All living things are made of cells. 2. Cells are the basic unit of structure and function in living things. 3. All cells come from other cells |
| What are the levels of organization within complex organisms? | Cells-tissues-organs-organ systems-organisms |
| What is cytoplasm? | gel-like fluid within a cell |
| What is a cell wall? | found in plants and protects and supports plant cell |
| What is a cell membrane? | substance that controls what comes in and out |
| What is the nucleus? | brain of the cell. The center |
| What is mitochondria? | powerhouse of the cell. |
| What are ribosomes | factories that produce proteins |
