What role does carbon dioxide play in photosynthesis?
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Answered by
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Carbon dioxide provides the carbon that the plant uses to produce glucose. Carbon dioxide is combined with water using the energy from sunlight.
The carbon in glucose is not only used in cellular respiration to make ATP, but actually makes up most of the plants. The majority of a plants mass comes from the carbon that it gets from carbon dioxide(not the soil or else potted plants would gradually suck out most of the soil around them) after the sugar it makes is metabolized into other things.
The photosynthesis reaction is basically the opposite of cellular respiration with 6 CO2 and water molecules going in (actually 12 water molecules but 6 are reformed by the end) and 1 glucose precursor molecule (a 3 carbon sugar called gyceraldehyde 3-phosphate or G3P that can be used to make glucose) and 6 O2 molecules coming out. The carbon enters photosynthesis in the Calvin cycle in which one carbon is fixated for every cycle. This means that even though there are actually 6 G3P molecules produced for every 3 CO2 molecules, since 5 of them are needed for the continuation of the cycle there is a net product of only 1 G3P for every 3CO2. A glucose molecule has 6 carbons and G3P have 3 carbons each so you need 6 CO2 molecules for every glucose.
This is a bit off topic but it is important to note that the oxygen released by photosynthesis is NOT from the carbon dioxide. It is from the H2O used in the light reactions to produce ATP and NADPH to be used in the Calvin cycle.
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The carbon in glucose is not only used in cellular respiration to make ATP, but actually makes up most of the plants. The majority of a plants mass comes from the carbon that it gets from carbon dioxide(not the soil or else potted plants would gradually suck out most of the soil around them) after the sugar it makes is metabolized into other things.
The photosynthesis reaction is basically the opposite of cellular respiration with 6 CO2 and water molecules going in (actually 12 water molecules but 6 are reformed by the end) and 1 glucose precursor molecule (a 3 carbon sugar called gyceraldehyde 3-phosphate or G3P that can be used to make glucose) and 6 O2 molecules coming out. The carbon enters photosynthesis in the Calvin cycle in which one carbon is fixated for every cycle. This means that even though there are actually 6 G3P molecules produced for every 3 CO2 molecules, since 5 of them are needed for the continuation of the cycle there is a net product of only 1 G3P for every 3CO2. A glucose molecule has 6 carbons and G3P have 3 carbons each so you need 6 CO2 molecules for every glucose.
This is a bit off topic but it is important to note that the oxygen released by photosynthesis is NOT from the carbon dioxide. It is from the H2O used in the light reactions to produce ATP and NADPH to be used in the Calvin cycle.
hope this answer helps you
please mark it as brainliest
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Answer :
- Photosynthesis is a process in which cells absorb carbon dioxide and solar energy to create sugar molecules and oxygen. These sugar molecules serve as the building blocks for the photosynthetic cell's more complex compounds, such as glucose.
- In the Light-Independent phase of photosynthesis, carbon dioxide plays a significant role. The chlorophyll inside grana captures the light energy that enters the chloroplasts.
- Plants use light and carbon dioxide (
) to generate the sugars they need to thrive, releasing oxygen in the process. Photosynthesis is the lungs of our planet.
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