| A | B |
|---|
| cell | the basic unit of structure and function of all living things |
| cell membrane | the thin covering of a cell |
| organelles | small structures within a cell |
| nucleus | the organelle that determines the cell's activities |
| chromosomes | threadlike structures that contain the characteristics of the organism |
| cytoplasm | a jellylike substance that keeps the cell functioning |
| mitochondria | organelles that release energy from food |
| vacuoles | organelles that store food, water, or waste materials |
| chloroplasts | plant organelles that make food from water and carbon dioxide |
| cell wall | plant organelles that surrounds the cell and gives it strength |
| diffusion | the process of materials moving into and out of cells from high to low concentration, without energy |
| osmosis | the movement of water and dissolved materials through cell membranes |
| tissue | cells that work together to perform a specific function |
| organ | tissues that work together |
| system | organs that work together to perform a specific function |
 | Plant Cell |
 | Animal Cell |
| active transport | a method of cellular transport whereby cells exert energy in order to move material into or out of the cell |
| osmosis | the diffusion of water across a cell membrane, from high to low concentration |
