Once supported by a predictable experimental outcome, a scientific hypothesis a still cannot be considered to have been proven true. b. can be used to predict the outcome of all future similar events. c is elevated to the status of theory. d. is never reexamined.

What happens as electrons move along the chain of molecules known as the electron transport chain? they gain energy, which causes atp molecules to lose phosphate groups. they gain energy, which causes h *ions to join with oxygen to produce water. they lose energy, which is then used by the cell to make atp. they lose energy, which is then used to break down atp.