NEET Biology question
The following (I-VI) are steps of chemiosmotic ATP synthesis in the light reaction. Arrange them in correct order: I. H+ concentration gradient established II. H+ diffuses through ATP synthase III. Carriers use energy from electrons to move H+ across the membrane IV. Electrons from PS-II pass along the electron transport chain V. Light excites electrons in PS-II VI. Energy of H+ flow is used by ATP synthase to make ATP
Answer: (C)
Solution
The correct sequence is: light excites electrons at PS-II (V) → electrons pass along the ETC (IV) → carriers use the electrons' energy to pump H+ across the
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