| A | B |
|---|
| Cell | the basic unit of structure and function of all living things |
| Cell Membrane | a thin covering that holds cells together. it also separates a cell from its surroundings |
| Nucleus | in its own membrane and determines the cells activities. it controls reproduction. |
| Cytoplasm | a jellylike substance containing many chemicals to keep the cell functioning. |
| Diffusion | causes many materials to move ina nd out of cells. particles of a substance move from an area where there are fewer particles of a substance. |
| Osmosis | how cells get most of their water. the movement of water and dissolved materials through cell membranes. |
| Tissue | this is when cells form together to perform a specific function. |
| Organ | tissues work together to form this. |
| System | organs that work together to perform a function form this. |
| Capillaries | bloodvessels that are so small that blood cells have to move through them in single file. |
| Alveoli | at the end of the smallest bronchi tubes, these are the tiny air sacs. |
| Villi | these line the small intestine where they absorb nutrients needed by the body. |
| Nephrons | These are the parts of the kidney that remove waste from blood. |
