Answer:
Right most: ADP ---> ATP
Left most O2---> H2O
Blue box at bottom: Mitochondrial matrix
Explanation:
The image shows electron transport chain present in inner mitochondrial membrane. Electron transport via protein complexes is coupled with proton transport from mitochondrial matrix into inter membrane space. Oxygen serves as terminal electron acceptor and is reduced into water. The proton motive force generated by passive movement of protons from inter-membrane space into matrix via proton channel of ATP synthase drives phosphorylation of ADP and forms ATP.
