Which mineral is crucial for the activation of the enzyme delta-aminolevulinic acid synthase, involved in heme biosynthesis?

A Zinc
B Iron ✓
C Copper
D Manganese

Explanation

Iron is essential for the activation of delta-aminolevulinic acid synthase, which catalyzes the first step in heme biosynthesis.

Source

Guyton and Hall Textbook of Medical Physiology
Minerals and Trace Elements Biochemistry Heme Biosynthesis Medium MEDICAL Confidence: high