Mineral NutritionHard
Question
Through the use of oxygen-18 (heavy oxgen), scienctists have found that the oxgen released during photosynthesis comes from molecules of
Options
A.carbondioxide
B.water
C.glucose
D.chlorophyll
Solution
Oxygen which is libereted during photosynthesis comes from water. In photosynthesis, the light energy is captured by chrophyll in the choroplasts in plant leaves. This energy is used to split water in a process called photolysis.
4H2O ⇋ 4H+ + 4OH
4OH
2H2O + O2 ↑ + 4e-
4H2O ⇋ 4H+ + 4OH
4OH
2H2O + O2 ↑ + 4e-Create a free account to view solution
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