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Actually the O2 comes from the water. One way to observe this is to use an isotope of oxygen like O18 and replace the O in the CO2 with the O18 and if the oxygen that is made is oxygen 18 then it is clear that it arose from the CO2. Once could then do the same thing with H2O. Another less ambiguous observation is that of thermophiles near the vents of ocean floors. Their is an abundance of H2S near these vents and the result reaction is the thermophiles producing glucose and Sulfur gas. Sulfur and Oxygen have the same valence electrons and will react the same way in order to get the electrons they need to be stable. It is safe to say that the O came from the H2O in the same way that the S comes from the H2S
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∙ 13y ago
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∙ 11y agoOxygen is not produced in photosynthesis, it is used in photosynthesis. Under each leaf, there are openings called stomata. Stomata allow for gaseous exchange between the plant and the surrounding air.
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∙ 13y agoIt comes from the H2O that is split during the light reactions in photosystem II
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∙ 11y agoOxygen is released when water is broken down to extract electrons and protons for use in the light reactions. bb
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∙ 12y agoglucose
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∙ 11y agowater
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Where does the oxygen produced in the dark reaction of photosynthesis come from?
It is obtained from air. Oxygen is not is not produced in dark reaction but in light reaction
Why are sea animals getting less oxygen?
The plants that plants that inside that water are green and are autotrophs and can produce their food by photosynthesis through the light which come in water of sun and they made their food through photosynthesis. During this process the oxygen is also produced which is used by plants for respiration and access oxygen is given out which is then used by the sea animals for respiration.
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
One of the important waste products of photosynthesis is oxygen gas Where does this oxygen gas come from?
Primarily from CO2.
Where does the energy come from for photosynthesis to take place?
Light waves produced by the sun.
Where does the oxygen produced in the dark reaction of photosynthesis come from?
It is obtained from air. Oxygen is not is not produced in dark reaction but in light reaction
Where does the oxygen come from photosynthesis?
Oxygen is one of the by-products of photosynthesis. It comes from the breakdown of water molecules in plants during photosynthesis.
What would happen if oxygen were not produced during photosynthesis?
If oxygen were not produced during photosynthesis then organisms could not perform cellular respiration. This means that they couldn't produce carbon dioxide which would make the plants unable to undergo photosynthesis.
Where does the free oxygen it the atmosphere come form today?
It is produced by the photosynthesis of plant life.
Where does the oxygen made during photosynthesis come from?
It comes from the splitting of water molecules.
Where do the oxigens atoms in the O2 produced during photosynthesis come from?
It is produced from water. Water is broken down by photolysis to get electrons.
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
Why are sea animals getting less oxygen?
The plants that plants that inside that water are green and are autotrophs and can produce their food by photosynthesis through the light which come in water of sun and they made their food through photosynthesis. During this process the oxygen is also produced which is used by plants for respiration and access oxygen is given out which is then used by the sea animals for respiration.
Where does oxygen in the air come from?
photosynthesis
What is the major atmospheric by product of photosynthesis and where does it come from?
Oxygen which comes from the synthesis of glucose. Oxygen is the by product of 6CO2 + 6H2O to make C6H12O6 releasing three Oxygen (O2) molecules for every molecule of glucose produced.
Where did the very significant percentage of oxygen come from?
photosynthesis
Where does the oxygen for cellular respiration come from?
Large quantities of oxygen are dissolved in water and make up a large percentage of air. Organisms extract it from these media. The ultimate source of molecular oxygen in the air and water appears to be as a byproduct of photosynthesis in plants and some single-celled organisms.
