The following are functions of zinc:
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Cofactor for more than 50 enzymes: Zinc plays a crucial role as a cofactor for many enzymes, involving various biochemical processes.
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Release of glucagon: Zinc is involved in the secretion of insulin and glucagon from the pancreas, which are important for glucose metabolism.
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DNA synthesis: Zinc is essential for DNA synthesis and cell division.
Fat metabolism is not commonly listed as a primary function of zinc, although it can have an indirect role in various metabolic pathways.
So the correct selections for the functions of zinc would be:
- Cofactor for more than 50 enzymes
- Release of glucagon
- DNA synthesis
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