Question

multiple choice question photorespiration occurs when ______ replaces carbon dioxide in the calvin cycle. oxygen an electron water a hydrogen ion

Explanation:

Photorespiration is a process where, under high - oxygen and low - carbon dioxide conditions, the enzyme RuBisCO (Ribulose - 1,5 - bisphosphate carboxylase/oxygenase) can bind with oxygen instead of carbon dioxide in the Calvin cycle. Among the given options, oxygen is the substance that replaces carbon dioxide in the Calvin cycle during photorespiration. An electron, water, and a hydrogen ion do not have the role of replacing carbon dioxide in the Calvin cycle for photorespiration.

Answer:

A. oxygen