Ribulose bisphosphate (RuBP) is generally referred to as CO2 acceptor because it is capable of combining with carbon dioxide with the help of Ribulose bisphosphate (RuBP) carboxylase/oxygenase also known as RuBisCO.
Hence, this option is correct.
Ribulose monophosphate (RuMP) is not involved in Calvin cycle.
3- Phosphoglycerate (3-PGA) accepts three phosphate molecules from ATP forming 1,3-Bisphosphoglycerate. Hence, this option is incorrect.
Glyceraldehyde 3-phosphate (G3P) which is also known as 3-phospho-glyceraldehyde (3-PGAL) is either converted to carbohydrates or is rearranged into Ribulose phosphate (RuP) which accepts phosphate molecules from ATP producing RuBP. Hence, this option is incorrect.
Ribulose bisphosphate (RuBP) is generally referred to as CO2 acceptor because it is capable of combining with carbon dioxide with the help of Ribulose bisphosphate (RuBP) carboxylase/oxygenase also known as RuBisCO.
