41.which of the following enables plants to convert light energy to chemical energy?
a.the sodium potassium pump
b. coupled channels
c. sugar channels
d. proton pumps

42.the source of oxygen produced during photosynthesis is
a.carbon dioxide
b.water
c.the air
d.glucose

45.proton pumps found in the thylakoid membranes are directly responsible for
a. moving hydrogen nucli out of the thylakoid
b. providing the energy to produve ATP
c. producing NADP+
d. generating glucose molecules