By using the isotope O18 as a tracer element in studying photosynthesis, it has been possible to show that the O2 released in the process comes from
a. O16
b. sugar
c. carbon dioxide only
d. water only
e. carbon dioxide and water
Answer: D
By using the isotope O18 as a tracer element in studying photosynthesis, it has been possible to show that the O2 released in the process comes from
a. O16
b. sugar
c. carbon dioxide only
d. water only
e. carbon dioxide and water
Answer: D