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Using the energy carriers formed in the first steps of photosynthesis, the light-independent reactions, or the Calvin cycle, take in CO 2 from the environment. An enzyme, RuBisCO, catalyzes a reaction with CO 2 and another molecule, RuBP.
- The Light-Dependent Reactions
The overall purpose of the light-dependent reactions is to...
- Photosynthesis in Prokaryotes
The two parts of photosynthesis—the light-dependent...
- The Light-Dependent Reactions
- Light-Independent Reaction Definition
- Overview of The Calvin Cycle
- Summary of Calvin Cycle Reactants and Products
- References
What are light-independent reactions in photosynthesis? The light-independent reaction uses the electrons from the light-dependent reactions to energize the process, particularly during the conversion of inorganic compounds into organic compounds, such as carbohydrates. They do not require light or energy from the sun to initiate the reaction. Ligh...
What is the Calvin cycle or Calvin cycle definition in biology? In green plants, leaves have small openings known as stomata. Through these stomata, CO2enters the plant. From stomata, it reaches into mesophyll cells through the intercellular spaces. When carbon dioxide gets into the mesophyll cells, it circulates into the stroma of the chloroplast....
What does the Calvin cycle produce?
2 G3P, 2 NADP+, and 3 ADP molecules are formed in one round of the Calvin cycle. ADP and NADP+ are not actual products. They are further utilized by light-dependent reaction A molecule of G3P consists of 3 carbon atoms. For the Calvin cycle to continue to work, RuBP needs to be regenerated. For this, 5 carbon atoms from 6 of 2 G3P molecules are used. So in each round, there is only net production of 1 carbon.
G3P to Glucose
For the formation of 1 extra G3P, 3 carbon atoms are needed and consequently 3 turns of the Calvin cycle. Therefore, 6 rounds of the Calvin cycle are needed for the formation of one molecule of glucose. The extra G3P can be utilized for the formation of carbohydrates like sucrose, cellulose, and starch.
Products of light-independent reactions
These are the products of the light-independent reactions:
The Two Parts of Photosynthesis. (2021, January 4). Retrieved August 6, 2021, from https://bio.libretexts.org/@go/page/8997The Light-Independent Reactions of Photosynthesis. (11/19/2019). Retrieved August 6, 2021, from https://courses.lumenlearning.com/boundless-biology/chapter/the-light-independent-reactions-of-photos...Photosynthesis. (1996 – 2021). Retrieved August 6, 2021, from https://www.nationalgeographic.org/encyclopedia/photosynthesis/#:~:text=Photosynthesis%20is%20the%20process%20by,in%20the%20form%20of%2...The Light Independent Reactions. (2021). Retrieved August 6, 2021, from https://openoregon.pressbooks.pub/mhccmajorsbio/chapter/calvin-cycle/ Primary Function of the Calvin Cycle. (November 01, 201...The light-independent reactions (Calvin cycle) use stored chemical energy from the light-dependent reactions to “fix” CO 2 and create a product that can be converted into glucose. The ultimate goal of the light-independent reactions (or Calvin cycle) is to assemble a molecule of glucose.
The Calvin cycle refers to the light-independent reactions in photosynthesis that take place in three key steps. Although the Calvin Cycle is not directly dependent on light, it is indirectly dependent on light since the necessary energy carriers ( ATP and NADPH) are products of light-dependent reactions.
Using the energy carriers formed in the first steps of photosynthesis, the light-independent reactions, or the Calvin cycle, take in CO 2 from the environment. An enzyme, RuBisCO, catalyzes a reaction with CO 2 and another molecule, RuBP.
- Lisa Bartee, Walter Shriner, Catherine Creech
- 2017
The Calvin cycle, or the light-independent reactions, is the term used for the reactions of photosynthesis that use the energy stored by the light-dependent reactions to form glucose and other carbohydrate molecules (Figure 6.13).
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Jun 21, 2024 · The light-dependent reaction takes place within the thylakoid membrane and requires a steady stream of sunlight, hence the name light-dependent reaction. The chlorophyll absorbs energy from the light waves, which is converted into chemical energy in the form of the molecules ATP and NADPH .
