Final answer:
In cell 5, the oxidation half-reaction involves manganese being oxidized, while the reduction half-reaction involves zinc ions being reduced.
Step-by-step explanation:
In cell 5:
Oxidation half-reaction: Mn - 2e → Mn
Reduction half-reaction: Zn²⁺ + 2e → Zn
In the oxidation half-reaction, manganese (Mn) is being oxidized as it loses electrons. In the reduction half-reaction, zinc ions (Zn²⁺) are being reduced as they gain electrons.