What enzyme fixes CO2 in bundle sheath cell of chloroplasts in Calvin Cycle of C4 plants?

What happens during the regeneration stage of the Calvin Cycle? Energy from ATP and electrons from NADPH are used to reduc 3-phosphoglycerate to form G3P molecules (which can be used to form other organic molecules such as glucose) The remaining G3P molecules that have not exited the cycle are used to re-form RuBP through a series of chemical reactions, so that the Calvin cycle can continue Oxygen is produced through this process The enzyme Rubisco attaches to CO2 to RuBP, causing the formation of molecules of 3-phosphoglycerate

After electrons are raised to high energy levels in photosystem II, they travel down an electron transport chain.  As they are stepped down in energy, the lost energy is used to power which process.      The pumping of high energy electrons into the intermembrane space.  This creates a large difference in concentration and in electric charge between the intermembrane space and the lumen of the thylakoid.  When these high energy electrons rush back into the thylakoid lumen, they are forced to travel through one of the ATP synthase molecules that sits embedded in the thylakoid membrane.  ATP synthase uses the flow of hydrogen ions to phosphorylate ADP, converting it to ATP.     The pumping of hydrogen ions into the stroma.  This creates a large difference in concentration and in electric charge between the stroma and the lumen (watery interior) of the thylakoid.  When When the hydrogen ions in the stroma rush back into the thylakoid lumen, they are forced to…

Which photosystem is involved in cyclic photophosphorylation?