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Who, after conducting experiments on purple and green sulfur bacteria, inferred that O2 evolved during photosynthesis comes from H2O not from CO2?
- a)Sachs
- b)Engelmann
- c)van Niel
- d)Blackmann
Correct answer is option 'C'. Can you explain this answer?
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Who, after conducting experiments on purple and green sulfur bacteria,...
Van Niel (1897-1885), on the basic of his studies with puple and green sulphur bacteria, demonstrated that phoosynthesis is a light dependent reaction in which hydrogen from a oxidisable compound reduces CO2 to form sugar.
In green sulphur bacteria, when H2S instead of H2O was used as hydrogen donor, no O2 was evolved.
In green sulphur bacteria, when H2S instead of H2O was used as hydrogen donor, no O2 was evolved.
6CO2+12H2S→C6H12O6+6H2O+125
From the above observation and conclusions, van Niel proposed that oxygenic photosyntheis of all organisms is actually an oxidation-reduction reaction involving action of hydrogen of water over carbon dioxide to form organic ompounds. He also propounded that oxygen is evolved from water.
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Who, after conducting experiments on purple and green sulfur bacteria, inferred thatO2evolved during photosynthesis comes fromH2Onot fromCO2?a)Sachsb)Engelmannc)van Nield)BlackmannCorrect answer is option 'C'. Can you explain this answer?
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