Final answer:
Photosynthesis and cellular respiration are two essential processes in biology. They have differences in their energy source and their product, but both involve gas exchange.
Step-by-step explanation:
Photosynthesis and cellular respiration are two processes that are essential for life on Earth. While they have some similarities, they also have some key differences.
The main difference between photosynthesis and cellular respiration is the source of energy they use. Photosynthesis uses light energy from the sun to convert carbon dioxide and water into glucose and oxygen. On the other hand, cellular respiration uses glucose and oxygen to produce carbon dioxide, water, and energy in the form of ATP.
One similarity between photosynthesis and cellular respiration is that both processes involve the exchange of gases. In photosynthesis, oxygen is released as a byproduct, while in cellular respiration, carbon dioxide is released. This gas exchange helps maintain the balance of gases in the atmosphere.