| Mistake | Correct Understanding | | :--- | :--- | | "Plants only do photosynthesis, not respiration." | Plants do both. Respiration occurs in all living cells, all the time. | | "Respiration only happens at night." | Respiration happens constantly, day and night. | | "The purpose of photosynthesis is to make ATP." | Photosynthesis makes glucose (and oxygen). Glucose is then used in respiration to make ATP. | | "Oxygen is a waste product of respiration." | No, oxygen is a of respiration. CO₂ and water are waste products. |
Common Gizmo Question: What is the energy currency of the cell? The Logic: While glucose stores energy, the cell cannot use glucose directly for work. It must be converted into ATP (Adenosine Triphosphate). Any valid "Cell Energy Gizmo Answer Key" will highlight ATP as the critical end-product for cellular work. Cell Energy Gizmo Answer Key