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AQA Bio Unit 4
Bioenergetics
| Term | Definition |
|---|---|
| Aerobic respiration | A form of respiration that uses oxygen to release energy from molecules like glucose |
| Aerobic respiration equation | Glucose + Oxygen -> Carbon Dioxide + Water |
| Anaerobic respiration | A form of respiration that releases energy from molecules like glucose without using oxygen |
| Anaerobic respiration equation (Animals) | Glucose -> Lactic Acid |
| Anaerobic respiration equation (Plants and Yeast) | Glucose -> Carbon Dioxide + Ethanol |
| Cellular respiration | An exothermic reaction which is continuously occurring in living cells. |
| Inverse proportion | A relationship between two values where as one value increases, the other value decreases at the same rate. |
| Inverse square law | As the distance from a light source increases, the light intensity is inversely proportional to the distance squared - given by the following equation |
| Limiting factor | A factor that limits the rate of a reaction when there is not enough of it. |
| Metabolism | The sum of all the reactions in a cell or the body. |
| Oxygen debt | The amount of extra oxygen the body needs after exercise to react with the accumulated lactic acid and remove it from the cells. |
| Photosynthesis | An endothermic reaction in which energy is transferred from the environment to the chloroplasts by light. |