Which of the following best explains steps involved in the mechanism by which cells capture and use free energy?
1) ATP is generated as the flow of electrons from photosystem II to photosystem I releases energy.
2) Chemiosmosis oxidizes carbon dioxide during the Calvin cycle to form molecules of glucose.
3) Electrons are pumped against a concentration gradient in the cytosol during the citric acid cycle.
4) Photons of light are absorbed by the stroma and transferred to photosystem I for processing.

Question

Which of the following best explains steps involved in the mechanism by which cells capture and use free energy?
1) 	ATP is generated as the flow of electrons from photosystem II to photosystem I releases energy.
2) 	Chemiosmosis oxidizes carbon dioxide during the Calvin cycle to form molecules of glucose.
3) 	Electrons are pumped against a concentration gradient in the cytosol during the citric acid cycle.
4) 	Photons of light are absorbed by the stroma and transferred to photosystem I for processing.