Final answer:
Copper helps in the formation of metallothionein, MFP factor, and ceruloplasmin.
Step-by-step explanation:
Copper helps in the formation of metallothionein, which is a protein that binds and transports copper within cells. It also aids in the production of the MFP factor, which is involved in the synthesis of melanin, the pigment responsible for hair, skin, and eye color. Additionally, copper is necessary for the production and function of ceruloplasmin, an enzyme involved in iron metabolism.
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