Which mineral is essential for the activation of the enzyme delta-aminolevulinic acid dehydratase?

A Zinc ✓
B Copper
C Iron
D Lead

Explanation

Zinc is a cofactor for the enzyme delta-aminolevulinic acid dehydratase, which is involved in heme synthesis.

Source

Harper's Biochemistry
Minerals and Trace Elements Biochemistry Heme Synthesis Medium MEDICAL Confidence: high