How do the reactants of photosynthesis differ from the reactants of chemosynthesis?

Answer 1

Both photosynthesis and chemosynthesis are processes by which organisms produce food. The difference between the two are the energies it use. Photosynthesis makes use of solar energy, while chemosynthesis makes use of chemical energy.

Answer 2

The reactants of photosynthesis are carbon dioxide and water, while the reactants of chemosynthesis are usually sulfur compounds or methane. Both processes involve the production of energy-rich molecules for the organism to use as a source of energy, but they occur in different types of organisms and utilize different energy sources.