Electron Transport Chain

Question 1

where is the electron transport chain located?

Answer 1

mitochondria

Question 2

how is the electrochemical gradient across the inner mitochondrial membrane established?

Answer 2

when electrons are transferred between molecules in a sequence of reactions as they pass through the ETC

Question 3

how does the environment of the mitochondrial matrix compare to that of the inner membrane space?

Answer 3

the mitochondrial matrix has a viscous space containing the mitochondrial DNA, ribosomes, inorganic ions, etc.; the inner membrane space is contained by the smaller outer membrane because it is invaginated