Dna is made up of bonded to a sugar phosphate backbone.

acid and bases
nucleotide bases
diotide bases
rna

The carrier molecules of the electron transport system are located in the

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.

This is a scaffolding of protein fibers that us sell keep it shape in a cell division and cell movement