| A | B |
| fermentation | also known as anaerobic respiration |
| respiration | release of energy by the breakdown of food |
| aerobic | respiration requiring oxygen |
| active transport | movement of materials requiring energy |
| anaerobic | respiration not requiring oxygen |
| osmosis | diffusion of water |
| diffusion | movement of materials from high to low concentration |
| metabolism | all the chemical activities in a cell |
| cell | basic building block of living things |
| organelle | tiny cell structure |