Q:

What is another name for the Calvin cycle?

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Quick Answer

The Calvin cycle is also known as the dark reactions, C3 cycle, Calvin-Benson-Bassham (CBB) cycle, or reductive pentose phosphate cycle. The cycle was discovered in 1950 by Melvin Calvin, James Bassham and Andrew Benson.

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Full Answer

The Calvin cycle is part of photosynthesis. The cycle is done in two stages. In the first stage, chemical reactions use light energy to produce adenosine triphosphate (ATP) and nicotinamide adenine dinucleotide phosphate (NADP) in its reduced state, or NADPH. The second stage is called the Calvin cycle. During this phase carbon dioxide and water are converted into organic molecules, such as glucose. The Calvin cycle is also called a dark reaction. The reactions require reduced NADP, which comes from a light-dependent reaction. The overall chemical equation for the Calvin cycle is: 3 CO2 + 6 NADPH + 5 H2O + 9 ATP yields glyceraldehyde-3-phosphate (G3P) + 2 H+ + 6 NADP+ + 9 ADP + 8 Pi (Pi = inorganic phosphate).

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  • Q:

    What is the Calvin cycle?

    A:

    The Calvin cycle is a metabolic process that uses the carbon from carbon dioxide, along with energy in the form of ATP, to produce sugar. This cycle takes place in the stroma of chloroplasts, which are found in plant cells.

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  • Q:

    What happens during the Calvin cycle?

    A:

    The Calvin cycle is a metabolic process that occurs in the chloroplasts of plant cells. Its main function is to create sugar from carbon dioxide for the plant to use as a source of energy.

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  • Q:

    What are the products of the Calvin cycle?

    A:

    The final product of the Calvin cycle, the second metabolic cycle of photosynthesis, is the sugar glucose. Carbon dioxide joins with organic molecules to produce glyceraldehyde-3-phosphate. After several glyceraldehyde-3-phosphates are produced from the cycle, they join together to form glucose.

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  • Q:

    When does the Calvin cycle of photosynthesis begin?

    A:

    The Calvin cycle of photosynthesis begins after light energy is transformed into chemical energy by the cells of plants. The adenosine triphosphate, or ATP, molecules created power the Calvin cycle. The Calvin cycle uses the energy to create carbohydrates from water and carbon dioxide.

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