Biology

The correct answer is: If D inhibits water formation, it will decrease the consumption of O₂.

In the electron - transport chain of aerobic respiration, O₂ is the final electron acceptor, and it combines with electrons and protons (H⁺) to form water (O₂ + 4e^–+ 4H⁺ → 2H₂O). If inhibitor D blocks water formation, the process of oxygen accepting electrons is disrupted, so the consumption of O₂ will decrease.

The other statements are incorrect:

Option A

If an inhibitor A blocks the breakdown of pyruvate, pyruvate cannot be further processed in the subsequent steps (such as entering the Krebs cycle). As a result, the consumption of pyruvate will decrease, not increase. Pyruvate will accu...