During Photosynthesis, _____ is Reduced to _____

Question

During photosynthesis, _____ is reduced to _____.
A)water; carbon dioxide
B)carbon dioxide; sugar
C)oxygen; water
D)sugar; oxygen
E)carbon dioxide; oxygen

Accepted Answer

During photosynthesis, carbon dioxide is reduced to sugar through the process of light-dependent reactions and light-independent reactions (Calvin cycle). Water is also utilized in the process, but it is not reduced to carbon dioxide. Oxygen is produced as a byproduct of photosynthesis, but it is not reduced to water.