Final answer:
ATP and NADPH are produced during the light-dependent reactions and used in the light-independent reactions to make glucose. Carbon dioxide is the source of carbon atoms for glucose production.
Step-by-step explanation:
During photosynthesis, ATP and NADPH molecules are produced during the light-dependent reactions. These molecules are then used in the light-independent reactions, also known as the Calvin Cycle, to make glucose.
The ATP and NADPH molecules are forms of chemical energy that are temporarily stored from the light-dependent reactions. They are used as fuel to power the light-independent reactions, where carbon dioxide is fixed and converted into glucose.
The carbon atoms needed to make glucose come from carbon dioxide, which is a waste product of respiration in various organisms.