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Carbon dioxide
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What makes the Calvin cycle a cycle?
The Calvin cycle is a cycle because it begins and ends with the same molecule, ribulose-1,5-bisphosphate (RuBP). This molecule is regenerated at the end of the cycle after it undergoes a series of reactions that produce sugars used by the plant for energy.
Which molecule is a reactant in the first step and final product in the fourth step of the Calvin Benson cycle?
RuBP
How many times must the Calvin cycle turn for the plant cell to be able to produce molecule of glucose?
six
Which substrate is regenerated after one cycle of the Kreb's cycle?
Oxaloacetate is regenerated at the end of the cycle.
Why is the Calvin cycle called a cycle?
The Calvin cycle is called such because every process produces something that the next process needs, right back to the original step. Carbon fixation produces the molecules needed for reduction, which produces the molecules needed for the regeneration of ribulose, which produces what's needed for carbon fixation.
What makes the Calvin cycle a cycle?
The Calvin cycle is a cycle because it begins and ends with the same molecule, ribulose-1,5-bisphosphate (RuBP). This molecule is regenerated at the end of the cycle after it undergoes a series of reactions that produce sugars used by the plant for energy.
What molecule is reduced in the Calvin Cycle?
In the Calvin Cycle, the molecule that is reduced is carbon dioxide (CO2).
Which molecule is a reactant in the first step and final product in the fourth step of the Calvin Benson cycle?
RuBP
What are the similarities between the Krebs Cycle and the Calvin cycle?
Similarity: They are both cycles, therefore both have a reactant that s regenerated. In the Krebs Cycle, oxaloacetate is regenerated. In the Calvin cycle, RuBP is regenerated (ribulose 1, 5-bisphosphate). Difference: Glucose is completely broken down in the Krebs Cycle to carbon dioxide, which in the Calvin Cycle, glucose is made as a product.
How many turns of the Calvin cycle are required to produce a molecule of glucose?
Six turns of the Calvin cycle are required to produce a molecule of glucose.
How many turns of the Calvin Cycle are necessary for one G3P molecule to exit?
One G3P molecule exits the Calvin Cycle after three turns.
What is the molecule that is regenerated with every turn of the Krebs cycle?
Each turn of the Kreb's cycle must regenerate oxaloacetate.
How many repeats of the Calvin Cycle are required to produce one glucose molecule?
Two repeats of the Calvin Cycle are required to produce one glucose molecule.
How many turns of the Calvin Cycle are required to produce one glucose molecule?
Six turns of the Calvin Cycle are required to produce one glucose molecule.
How many turns of the Calvin Cycle are required to produce one molecule of glucose?
Six turns of the Calvin Cycle are required to produce one molecule of glucose.
How many times does the Calvin cycle turn to make 1 molecule of glucose C6H12O60?
Six. (The info below is taken directly from the Wikipedia article on the Calvin cycle. The immediate products of ONE turn of the Calvin cycle are: 2 x glyceraldehyde-3-phosphate (G3P) molecules 3 x ADP 2 x 2 NADP+ (ADP and NADP+ are regenerated in the light-dependent reactions). Each G3P molecule is composed of 3 carbons. In order for the Calvin cycle to continue, RuBP (ribulose 1,5-bisphosphate) must be regenerated. So, 5 of the 6 carbons from the 2 G3P molecules are used for this purpose. Therefore, there is only 1 net carbon produced to play with for each turn. To create 1 extra G3P requires 3 carbons, and therefore 3 turns of the Calvin cycle. To make one glucose molecule (which can be created from 2 G3P molecules) would require 6 turns of the Calvin cycle. Surplus G3P can also be used to form other carbohydrates such as starch, sucrose, and cellulose depending on what the plant needs.
What molecule is fixed during the Calvin cycle to produce sugars?
During the Calvin cycle, carbon dioxide (CO2) is fixed to produce sugars.
