| A | B |
| The control centre of a cell | nucleus |
| This genetic substance is present in the nucleus | DNA |
| A word for a cell part | organelle |
| A cell part that produces protein | ribosome |
| A cell part that packages cell secretions | Golgi body |
| The liquid part of a cell | cytosol |
| The powerhouses of a cell | mitochondria |
| A cell part that releases an enzyme for destroying foreign matter | lysosome |
| This type of cell does not have a nucleus | red blood cell |
| This forms a protective boundary of a cell | cell membrane |
| A word that describes the maintenance of a constant internal environment | homeostasis |
| A word for the maintenance of a constant internal temperature | homeothermy |
| A hormone that helps to drop the level of glucose in the blood | insulin |
| A tissue that is responsible for movement | muscle |
| A tissue for relaying messages in the body | nerve |
| A protective tissue | epithelium |
| This substance of low pH is found in the stomach | acid |
| Substance in the stomach that protects it from strong stomach acid | mucus |
| Another word for windpipe | trachea |
| Another word for our food tube | oesophagus |