A photosynthetic cell is provided with $^{14} C O_{2}$ and $H_{2}^{18} O$ . They form

C_{6} H_{12} O_{6} + O_{2}

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^{14} C_{6} H_{12} O_{6} + O_{2}

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^{14} C_{6} H_{12} O_{6} +^{18} O_{2}

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C_{6} H_{12} O_{6} + O_{2}

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Solution

The correct option is A $^{14} C_{6} H_{12} O_{6} +^{18} O_{2}$
Ruben and Kamen used the radioactive isotope of oxygen( $^{1}$ $^{8}$ O) in water and found that O $_{2}$ liberated in the process was isotopically labelled. On the contrary, when $^{1}$ $^{8}$ O in CO $_{2}$ was used, the evolved O $_{2}$ did not show radioactivity.
Calvin used the radioactive isotope of carbon( $^{1}$ $^{4}$ C) of Chlorella and found that carbohydrate liberated in the process was isotopically labelled. It suggests that the O $_{2}$ is liberated from the oxidation of water while the glucose is the product of the reduction of CO $_{2}$ .
So, the overall reaction will be:
12 H $_{2}$ $^{1}$ $^{8}$ O +6 $^{14}$ CO $_{2}$ $\to$ $^{14}$ C $_{6}$ H $_{12}$ O $_{6}$ + 6 $^{1}$ $^{8}$ O $_{2}$ + 6H $_{2}$ O.
Hence, the correct answer is ' $^{14}$ C $_{6}$ H $_{12}$ O $_{6}$ + $^{1}$ $^{8}$ O $_{2}$ '.

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Similar questions

"C₆H₁₂O₆+ O₂ -----> CO₂ + O₂ + Energy " is it a decomposition reaction???

Balance the given equation:

CO2+H2O---->C6H12O6+O2+H2O

ANS .(1) 6CO2+7H2O----->C6H12O6+6O2+H2O is incorrect

Where as (2) 6CO2+12H2O------>C6H12O6+6O2+6H2O is correct.

Why first answer is incorrect and second answer is correct

CO₂ + H₂O → C₆H₁₂O₆ + O₂ + H₂O

Is the given equation correct? If not, correct it.

Question 27
Which of the following equations is the summary of photosynthesis?

(a) $6 C O_{2} + 12 H_{2} O \to C_{6} H_{12} O_{6} + 6 O_{2} + 6 H_{2} O$
(b) $6 C O_{2} + H_{2} O + S u n l i g h t \to C_{6} H_{12} O_{6} + O_{2} + 6 H_{2} O$
(c) $6 C O_{2} + 12 H_{2} O + C h l o r o p h y l l + S u n l i g h t \to C_{6} H_{12} O_{6} + 6 O_{2} + 6 H_{2} O$
(d) $6 C O_{2} + 12 H_{2} O + C h l o r o p h y l l + S u n l i g h t \to C_{6} H_{12} O_{6} + 6 C O_{2} + 6 H_{2} O$

CO₂ + H₂O → C₆H₁₂O₆ + O₂ + H₂O

Is the given equation correct? If not, correct it.

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A photosynthetic cell is provided with 14CO2 and H218O. They form

A photosynthetic cell is provided with $^{14} C O_{2}$ and $H_{2}^{18} O$ . They form