| A | B |
|---|
| organism | An individual animal, plant or single cell that carries out its own life activities |
| organ system | Many organs working together to do a special job |
| organ | Different tissues working together to do a special job |
| tissue | A group of similar cells working together |
| cell | Smallest unit of structure and function of a living thing |
| Example of a cell | Neuron (Nerve Cell) |
| Examples of a tissues | Smooth, Cardiac, Voluntary Muscles |
| Example of an organ | Heart |
| Example of an organ system | Digestive System |
| Example of an organism | Hawk |
| Largest organ in the human body | Skin |
| organelle | A structure within the cell that performs a specific function or job |
