Read the following statements carefully: A. RuBisCO has a much greater affinity for O ₂ than for CO ₂ . B. In C ₃ plants, binding of O ₂ to RuBisCO results in the formation of one molecule of phosphoglycerate and phosphoglycolate. C. The photorespiratory pathway involves only the chloroplast and mitochondria. D. Photorespiration is an energy-consuming process that synthesizes neither ATP nor sugars. How many of the a

Step-by-step solution

Statement A is incorrect because RuBisCO has a much greater affinity for CO ₂ than for O ₂ . This competitive binding is determined by the relative concentrations of O ₂ and CO ₂ . Statement B is correct. In C ₃ plants, when O ₂ binds to RuBisCO, RuBP is converted into one molecule of phosphoglycerate (3C) and one molecule of phosphoglycolate (2C) in the photorespiratory pathway. Statement C is incorrect because the photorespiratory pathway involves three distinct organelles: chloroplast, peroxisome, and mitochondr