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Ribulose Biophosphate

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In phosphorylation is ATP utilized to regenerate RuBP?

During the carbon reduction cycle in plants during phosphorylation, ATP is used to break down RuBP and form glucose and other sugars however ATP is Not used while the cycle is regenerating RuBP.


Does the Calvin cycle require RuBP?

Yes, the Calvin cycle requires RuBP (ribulose-1,5-bisphosphate) as it is the starting molecule for carbon fixation. RuBP reacts with CO2 to form an unstable intermediate that eventually leads to the synthesis of sugars such as glucose.


Carbon dioxide acceptor in the calvin-benson cycle is?

The carbon dioxide acceptor in the Calvin-Benson cycle is ribulose-1,5-bisphosphate (RuBP). RuBP is a 5-carbon compound that combines with carbon dioxide in the first step of the cycle to form an unstable 6-carbon compound, which eventually leads to the production of glucose.


Five carbon compound that combines with co2 in the Calvin cycle to make glicose?

The five-carbon compound that combines with CO2 in the Calvin cycle to form glucose is called ribulose-1,5-bisphosphate (RuBP). RuBP reacts with CO2 in a series of reactions facilitated by the enzyme rubisco to produce a six-carbon compound, which eventually leads to the synthesis of glucose.


What is the role of rubp in photosynthesis?

Rubisco (ribulose-1,5-bisphosphate carboxylase/oxygenase) is an enzyme that plays a key role in photosynthesis by catalyzing the first major step in carbon fixation, where it combines carbon dioxide and ribulose-1,5-bisphosphate to form 3-phosphoglycerate. This reaction helps plants convert atmospheric carbon dioxide into organic compounds that can be used for growth and energy production.


What is the acceptor of carbon dioxide?

The acceptor of carbon dioxide in photosynthesis is ribulose-1,5-bisphosphate (RuBP) in the Calvin cycle. RuBP combines with carbon dioxide in the presence of the enzyme RuBisCO to form an unstable 6-carbon compound, which eventually leads to the production of sugars.


What are the 3 basic events of light independet reactions?

The three basic events of light-independent reactions (Calvin cycle) are carbon fixation, reduction, and regeneration of RuBP. Carbon fixation involves utilizing CO2 to convert it into a usable form (3-PGA). Reduction involves converting 3-PGA into G3P using ATP and NADPH. Regeneration of RuBP involves converting G3P into RuBP to restart the cycle.


How does RuBP get regenerated?

RuBP (ribulose-1,5-bisphosphate) gets regenerated during the Calvin cycle, a series of enzymatic reactions that occur in the stroma of chloroplasts. The enzyme RuBisCO catalyzes the addition of carbon dioxide to RuBP, forming an unstable molecule that quickly breaks down into two molecules of 3-phosphoglycerate. These molecules are then converted into other compounds, ultimately leading to the regeneration of RuBP to continue the cycle.


What three substances are introduced into the Calvin benson cycle to produce to sugar molecules?

The Calvin Benson cycle uses ATP (adenosine triphosphate), NADPH (Nicotinamide adenine dinucleotide phosphate), and CO2 (carbon dioxide) to create glucose.


Why is it necessary to regenerate RuBP during the Calvin Cycle?

Regenerating RuBP during the Calvin Cycle is necessary because RuBP is the molecule that captures carbon dioxide from the atmosphere and initiates the process of carbon fixation. Without regenerating RuBP, the Calvin Cycle would not be able to continue and produce glucose, which is essential for plant growth and energy production.


How many molecules of RuBP are required to produce 20 molecules of serine in photorespiration?

In photorespiration, each molecule of serine produced requires one molecule of ribulose bisphosphate (RuBP) to enter the cycle. Since each RuBP can ultimately lead to the production of one molecule of serine, producing 20 molecules of serine would require 20 molecules of RuBP. Therefore, 20 molecules of RuBP are needed to produce 20 molecules of serine in photorespiration.


What will happen to the concentration of RuBP and GP if the supply of carbon dioxide is reduced?

If the supply of carbon dioxide is reduced, the concentration of RuBP (ribulose-1,5-bisphosphate) will increase as it accumulates without being converted into GP (glycerate-3-phosphate). On the other hand, the concentration of GP will decrease since there will be fewer reactants available for its formation in the Calvin cycle.