| A | B |
|---|
| cell differentiation | specialization of cells |
| cell respiration | process in cells where oxygen is used to release stored energy |
| nucleus | control center of the cell |
| chromosomes | carries the genes that determine the traits that an offspring inherits from its parents |
| chloroplasts | green structure in plant cells that contain chlorophyll and allow the cell to use energy from the sun |
| cells | basic unit of all life |
| cell membrane | structure surrounding the cell that controls the movement of materials in and out of the cell |
| nuclear membrane | structure that surrounds the nucleus and controls the movement of materials in and out of the nucleus |
| cytoplasm | watery gel inside a cell |
| cell theory | explains the structure of all living things |
| cell wall | rigid structure surrounding a plant cell |
| mitochondria | organelle where energy is released from food |
| vacuoles | structure in the cytoplasm where food and other substances are stored |
| diffusion | tendency of a substance to move from an area of greater concentration to an area of lesser concentration |
| osmosis | diffusion of water through a membrane |
| active transport | process where a cell uses energy to move materials through the cell membrane |
| photosynthesis | process by which green plants, as well as other producers, make their own food by utilizing light energy |
| fermentation | a chemical change where an organism breaks down sugar thereby producing carbon dioxide and alcohol or lactic acid |
| mitosis | process of cell division |
| tissues | a group of similar, specialized cells that work together to perform the same job; muscle, nerve, etc. |
| organ | group of tissues that form together to perform a specialized job |
| organ system | a group of organs that work together to form a system |
| concentration | to make a solution less dilute |
