Photosynthesis and cellular respiration are two distinct biological processes. Photosynthesis involves light and carbon dioxide, while cellular respiration involves oxygen.
- Photosynthesis: The process involves light (as it uses sunlight to convert carbon dioxide and water into glucose and oxygen).
- Cellular respiration: The process involves oxygen (as it utilizes glucose and oxygen to produce carbon dioxide, water, and energy).
In summary, the most relevant distinction based on your options is that photosynthesis involves light and carbon dioxide, while cellular respiration involves oxygen.