Question

multiple choice question
in ______, rubisco binds oxygen instead of carbon dioxide, and co₂ is the ultimate product, which is essentially the reverse of the calvin cycle.

○ cellular respiration
○ photorespiration
○ the light dependent reactions
○ chemiosmosis

Explanation:

• Cellular respiration: Involves breaking down glucose to produce ATP, not related to rubisco binding oxygen instead of CO₂.
• Photorespiration: Occurs when rubisco binds O₂ instead of CO₂, and the process ultimately produces CO₂, which is the reverse of the Calvin cycle (which fixes CO₂).
• The light - dependent reactions: These reactions focus on capturing light energy to produce ATP and NADPH, and do not involve rubisco binding oxygen.
• Chemiosmosis: Is a process related to the movement of ions across a membrane to generate ATP, not related to rubisco's action.

Answer:

B. photorespiration