flashcard notes on the WJEC GCSE Biology Unit 1 topic of Respiration based on the 2025-26 spec made for StMikes
| Front | what is the percentage oxygen, carbon dioxide, water vapour, and nitrogen in expired air? |
| Back | oxygen: 16%carbon dioxide: 4%water vapour: saturated (~1%)nitrogen: 79% |
| Front | what are the two main uses of the energy released in respiration? |
| Back | growth and movement (movement only applies to animals) |
| Front | in what form is energy released in respiration? |
| Back | ATP molecules |