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It is produced from water. Water is broken down by photolysis to get electrons.

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Q: Where do the oxigens atoms in the O2 produced during photosynthesis come from?
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During photosynthesis water molecules are split into atoms of oxygen and what?

Since water is comprised of two hydrogen atoms and one oxygen atom, when it is split into atoms by plants during photosynthesis the only other atoms other than oxygen that are produced are hydrogen atoms.


What is the immediate source for hydrogen atoms for the production of sugar during photosynthesis?

The NADPH system is the immediate source for hydrogen atoms for the production of sugar during photosynthesis.


What are sugars produced from in the third stage of photosynthesis?

Carbon Dioxide


Through photosynthesis a simple sugar is produced. Where do the carbon atoms come from to produce this sugar molecule?

carbon dioxide


How many molecules of oxygen produced along with one modecule of sugar?

The answer is six.


Where do carbon hydrogen and oxygen atoms come from to form glucose during photosynthesis?

They come from CO2 and Water. They are the raw materials


How many atoms of carbon in the formula of photosynthesis?

6 atoms because of 6CO2.


How many oxygen atoms are needed to start photosynthesis reaction?

2 atoms


Why do we use 12 molecules of water in photosynthesis?

Even i wanted to know the answer to this question!! :p 6CO2+12H2O---> C6H12O6 + 6H2O + 6O2 I feel the number 12 preceding H2O in the equation of photosynthesis is merely the stoichiometric coefficient that is necessary to show that since 24 atoms of hydrogen are produced, hence 24 hydrogen atoms ought to be used....:/...


Are radioactive isotopes produced when atoms lose electrons?

When atoms lose electrons cations are produced.


How many atoms of hydrogen are there in the products of photosynthesis?

12


How many oxygen atoms are left after photosynthesis?

6