The skeleton of a vertebrate is
a. internal and made of bones.
b. made of muscle and very strong.
c. surrounded by a hard shell.
d. controlled by fluid pressure. reset selection

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.