Where the Oxygen! goes in Photosynthesis?
6CO2+6H2O---->C6H12O6+9O2 (may be wrong balancing) on the right side of the equation where the oxygen came from. as it come from carbon dioxide or water. How?
Answer:
To put the answer in a nutshell: The O2 comes from water. H2O takes it's electrons to the seconf photosystem on the cytochrom P680 (it is the greatest oxidizing agent) It is take place the next semireaction: 2H2O--->4H+ +O2 + 4e-
or
2H2O+2NADP+ -----> O2 + 2NADPH + 2H+
Important role in this process plays the light
And also you are mystake in your chemical equation: near the O2 must be "6"
P.S. More information you can see in "Principles of biochemistry" (A. Lehninger)
The raw materials of photosynthesis, water and carbon dioxide, enter the cells of the leaf, and the products of photosynthesis, sugar and oxygen, leave the leaf.
Water enters the root and is transported up to the leaves through specialized plant cells known as xylem (pronounces zigh-lem). Land plants must guard against drying out (desiccation) and so have evolved specialized structures known as stomata to allow gas to enter and leave the leaf. Carbon dioxide cannot pass through the protective waxy layer covering the leaf (cuticle), but it can enter the leaf through an opening (the stoma; plural = stomata; Greek for hole) flanked by two guard cells. Likewise, oxygen produced during photosynthesis can only pass out of the leaf through the opened stomata. Unfortunately for the plant, while these gases are moving between the inside and outside of the leaf, a great deal water is also lost. Cottonwood trees, for example, will lose 100 gallons of water per hour during hot desert days. Carbon dioxide enters single-celled and aquatic autotrophs through no specialized structures.
after the second electron transport chain is complete in Photosynthesis 2 (aka the light reactions) and the Clavin Cycle (aka the dark reaction) oxygen molecules supply the energy for ATP synthase because they form a concentration gradient in the electron transport chain. After they supply this energy they are no longer needed by the plant and oxygen is released as a byproduct of photosynthesis.
from the water.
i remember they did some kind of experiment, using h2o(18),o18 as the radioactive tracer atom.and then they found it in the oxygen produced.(but this has to be done in a short time because eventually the oxygen containing O18 will be used in the oxidisation process)
its 6 o2 produced and its produced from the H2o
There's a thing called the Calvin cycle ( it's covered in A-level biology if you're interested) where the carbon is fixed into a sugar during photosynthesis. It's essentially a long series of reactions that changes the molecules involved ( see link for more detail) to get to the end point of sugar and oxygen, with the oxygen coming from the water molecules and the carbon dioxide.
The link tells you it in detail.
E-mail me if you want more info.
Photosynthesis is the action of Sunlight ('Photo' = Photons), in plants where some bacteria use the sunlight to convert CO2 and Water by 'Synthesis' into sugar which the plant uses as fuel (just as humans do).
Your formula shows this conversion. The Oxygen formed in the process goes to the atmosphere.
More Questions and Answers:
Quick Chemistry question?
Reaction between schiff's base and D-glucose.?
Using tabulated values of S°, calculate the standard entropy per mole of atoms for Kr.?
2nd Year College Chem, Buffers & pH!?
When KCl dissolves in water....?
What is kinetic gas equation?
What is 'reducing effect' in chemistry?
Help!! Chemistry. . . . . . what are the properties of mixture?? and the properties of compound??
What do the chemical formulas Cl2, 02, and H2 mean?
Answer:
To put the answer in a nutshell: The O2 comes from water. H2O takes it's electrons to the seconf photosystem on the cytochrom P680 (it is the greatest oxidizing agent) It is take place the next semireaction: 2H2O--->4H+ +O2 + 4e-
or
2H2O+2NADP+ -----> O2 + 2NADPH + 2H+
Important role in this process plays the light
And also you are mystake in your chemical equation: near the O2 must be "6"
P.S. More information you can see in "Principles of biochemistry" (A. Lehninger)
The raw materials of photosynthesis, water and carbon dioxide, enter the cells of the leaf, and the products of photosynthesis, sugar and oxygen, leave the leaf.
Water enters the root and is transported up to the leaves through specialized plant cells known as xylem (pronounces zigh-lem). Land plants must guard against drying out (desiccation) and so have evolved specialized structures known as stomata to allow gas to enter and leave the leaf. Carbon dioxide cannot pass through the protective waxy layer covering the leaf (cuticle), but it can enter the leaf through an opening (the stoma; plural = stomata; Greek for hole) flanked by two guard cells. Likewise, oxygen produced during photosynthesis can only pass out of the leaf through the opened stomata. Unfortunately for the plant, while these gases are moving between the inside and outside of the leaf, a great deal water is also lost. Cottonwood trees, for example, will lose 100 gallons of water per hour during hot desert days. Carbon dioxide enters single-celled and aquatic autotrophs through no specialized structures.
after the second electron transport chain is complete in Photosynthesis 2 (aka the light reactions) and the Clavin Cycle (aka the dark reaction) oxygen molecules supply the energy for ATP synthase because they form a concentration gradient in the electron transport chain. After they supply this energy they are no longer needed by the plant and oxygen is released as a byproduct of photosynthesis.
from the water.
i remember they did some kind of experiment, using h2o(18),o18 as the radioactive tracer atom.and then they found it in the oxygen produced.(but this has to be done in a short time because eventually the oxygen containing O18 will be used in the oxidisation process)
its 6 o2 produced and its produced from the H2o
There's a thing called the Calvin cycle ( it's covered in A-level biology if you're interested) where the carbon is fixed into a sugar during photosynthesis. It's essentially a long series of reactions that changes the molecules involved ( see link for more detail) to get to the end point of sugar and oxygen, with the oxygen coming from the water molecules and the carbon dioxide.
The link tells you it in detail.
E-mail me if you want more info.
Photosynthesis is the action of Sunlight ('Photo' = Photons), in plants where some bacteria use the sunlight to convert CO2 and Water by 'Synthesis' into sugar which the plant uses as fuel (just as humans do).
Your formula shows this conversion. The Oxygen formed in the process goes to the atmosphere.
The answers post by the user, for information only, FunQA.com does not guarantee the right.
More Questions and Answers: