What are the inputs and outputs of cellular respiration and photosynthesis? water energy sugar oxygen carbon dioxide

Photosynthesis:

I - Water, Carbon dioxide,   O - Sugar, Oxygen

Cellular Respiration:

I - Oxygen, Sugar  O - Energy, Carbon Dioxide, Water

C. They are complementary

Explanation:

The active site is concave to accomodate the unusual shapes of the substrates, which are designed to fit solely in their designated active site. (This is the concept of specificity of reaction) Therefore, they complement each other.