Table of Contents
- 1 How many molecules of RuBP are there?
- 2 How many RuBP are used in one turn of the Calvin cycle?
- 3 Where does Ribulose-1/5-Bisphosphate come from?
- 4 What is produced from the Calvin cycle?
- 5 How many ATP molecules are required for regeneration of RuBP molecule in Calvin cycle?
- 6 What is Ribulose function?
- 7 How many carbon atoms are in RuBP and PGA?
- 8 Which is the enzyme that mediates the carboxylation of ribulose bisphosphate?
How many molecules of RuBP are there?
In the stroma, in addition to CO2, two other components are present to initiate the light-independent reactions: an enzyme called ribulose bisphosphate carboxylase (RuBisCO), and three molecules of ribulose bisphosphate (RuBP), as shown in Figure 2. RuBP has five atoms of carbon, flanked by two phosphates.
How many RuBP are used in one turn of the Calvin cycle?
Three RuBP molecules
How many RuBP molecules are used in one turn of the Calvin cycle? Three RuBP molecules are used.
How many CO2 molecules must be added to RuBP?
How many carbon dioxide molecules must be added to RuBP to make a single molecule of glucose? Six carbon dioxide molecules are required to produce two G3P molecules, which can be combined to make one glucose molecule.
What is the Ribulose?
RuBisCo or ribulose-1,5-bisphosphate carboxylase/oxygenase, is an abundant enzyme involved in the process by which the atmospheric carbon dioxide is converted by plants energy-rich molecules such as glucose.
Where does Ribulose-1/5-Bisphosphate come from?
Form II RuBisCOs consist of only large subunits and are found in photosynthetic bacteria, chemoautotrophic bacteria, and eukaryotic dinoflagellates. In both forms of RuBisCO, the large subunit assembles into a dimer to form a common minimum catalytic unit.
What is produced from the Calvin cycle?
The reactions of the Calvin cycle add carbon (from carbon dioxide in the atmosphere) to a simple five-carbon molecule called RuBP. These reactions use chemical energy from NADPH and ATP that were produced in the light reactions. The final product of the Calvin cycle is glucose.
How many ATP molecules are produced in the Calvin cycle?
The Calvin cycle uses 18 ATP and 12 NADPH molecules to produce one glucose molecule.
How many molecules of RuBP and CO2 are respectively?
Each turn of the cycle involves only one RuBP and one carbon dioxide and forms two molecules of 3-PGA.
How many ATP molecules are required for regeneration of RuBP molecule in Calvin cycle?
six ATP molecules
For the generation of one carbon dioxide molecule from the pathway six carbon molecules is required, so six turns of the cycle required for regeneration of one molecule of RuBP one ATP is required and for the generation of six molecules of RuBP six ATP molecules are required.
What is Ribulose function?
function in photosynthesis The enzyme ribulose 1,5-bisphosphate carboxylase/oxygenase (Rubisco) catalyzes the formation of organic molecules from CO2. As the major enzyme of all photosynthetic cells, Rubisco is the most abundant protein on Earth.
Where does D-ribulose 1, 5-bisphosphate come from?
D-ribulose 1,5-bisphosphate is a ribulose phosphate that is D-ribulose attached to phosphate groups at positions 1 and 5. It is an intermediate in photosynthesis. It has a role as an Escherichia coli metabolite and a plant metabolite. It derives from a D-ribulose.
Which is the 2 acceptor of ribulose in plants?
2 acceptor in plants. It is a colourless anion, a double phosphate ester of the ketopentose ( ketone -containing sugar with five carbon atoms) called ribulose. Salts of RuBP can be isolated, but its crucial biological function happens in solution. RuBP occurs not only in plants but in all domains of life, including Archaea, Bacteria, and Eukarya.
How many carbon atoms are in RuBP and PGA?
RuBP has five atoms of carbon, flanked by two phosphates. RuBisCO catalyzes a reaction between CO2 and RuBP. For each CO2 molecule that reacts with one RuBP, two molecules of 3-phosphoglyceric acid (3-PGA) form. 3-PGA has three carbons and one phosphate.
Which is the enzyme that mediates the carboxylation of ribulose bisphosphate?
The enzyme that mediates the carboxylation of ribulose bisphosphate, ribulose bisphosphate carboxylase/oxygenase (see rubisco ), is also involved in photorespiration. Pick a style below, and copy the text for your bibliography.