Which on the folllowing cell parts act as a boundary and controls what enters and leaves the cell?

What is the difference between an igneous, sedimentary and metamorphic rock

Explain why biological control methods are generally environmentally superior to chemical pest control methods.

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.