Date Class
21. What is the main role of carbon dioxide during the process of photosynthesis?
a. Carbon dioxide is a waste product that is released into the atmosphere.
b. Carbon dioxide is used to assemble sugars, the main product of
photosynthesis.
C. Carbon dioxide is used to accept electrons and transfer them between
photosystems.
d. Carbon dioxide is used to transfer energy from the light-dependent reactions
to the light-independent reactions.