Which outcome is most likely when high temperatures inhibit Rubisco’s oxygenase activity?

💡 Explanation

When high temperatures selectively inhibit Rubisco's oxygenase activity but not carboxylase activity, the photorespiration pathway is suppressed because Rubisco primarily catalyzes the carboxylation of RuBP. Therefore, reduced photorespiration byproduct buildup results, rather than the other options that are associated to changes in carboxylation or other pathways.

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