The fact that oxygen released during photosyn | vedclass

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(A) The experiment using the $O^{18}$ isotope was conducted by $Ruben$ and $Kamen$ in $1941$. They used the heavy isotope of oxygen $(O^{18})$ to trac

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Ruben and Kamen

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(A) The experiment using the $O^{18}$ isotope was conducted by $Ruben$ and $Kamen$ in $1941$. They used the heavy isotope of oxygen $(O^{18})$ to trace the source of oxygen evolved during photosynthesis. They provided water containing $O^{18}$ $(H_2O^{18})$ to the green algae $Chlorella$. It was observed that the oxygen evolved during photosynthesis was $O^{18}$,which confirmed that the oxygen released during photosynthesis comes from water and not from carbon dioxide.

The fact that oxygen released during photosynthesis comes from water was proved by $O^{18}$ isotope experiments conducted by:

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