Match the following
| Column I | Column II |
| (P) Ferritin | (I) Electron transport |
| (Q) Vitamin V12 | (II) Ionophore |
| (R) Cytochromes | (III) Oxygen transport |
| (S) Valinomycin | (IV) Methyl donor |
| (V) Organomettalic enzyme | |
| (VI) Iron storage |
1
(P) - (VI), (Q) - (IV), (R) - (I), (S) - (II)
2
(P) - (I), (Q) - (III), (R) - (IV), (S) - (IV)
3
(P) - (III), (Q) - (V), (R) - (IV), (S) - (V)
4
(P) - (VI), (Q) - (V), (R) - (I), (S) - (II)