Which of the following constitutes Hill reaction?

  1. Photolysis by chloroplasts
  2. Photolysis of water by isolated chloroplasts forming ATP and NADPH
  3. Photolysis of water by isolated illuminated chloroplasts causing reduction of some chemicals and libration of oxygen
  4. Photolysis of water liberation oxygen and hydrogen by illuminated isolated chlorplasts

Answers (1)

The Hill reaction is the light-driven transfer of electrons from water to Hill reagents (non-physiological oxidants) in a direction against the chemical potential gradient as part of photosynthesis.

Option (C)

Photolysis of water by isolated illuminated chloroplasts causing reduction of some chemicals and libration of oxygen.

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