Ribulose-1,5-bisphosphate carboxylase [kahr-BOK-suh-layz]/oxygenase[OK-si-juh-nays], also known as RuBisCO, is an enzyme present in photosynthetic plants and is thought to be the most abundant protein on earth. Which of the following is NOT a reason that plants produce such large quantities of RuBisCO?