Question

Isotopes used in the photosynthetic experiments by scientists were 

A

and .

B

and .

C

and .

D

and .

Medium
Solution
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Correct option is D)

Radioisotopes, like heavy isotopes of carbon (i.e., ) and oxygen (i.e., ) were used in photosynthesis. labelled carbon dioxide was used by Calvin and coworkers to trace the path of carbon in dark reaction, whereas water containing was used by Ruben and Kamen to confirm that the source of oxygen released in photosynthesis is water not carbon dioxide.

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