Which trace element is essential for the proper functioning of the enzyme nitric oxide synthase?

A Zinc
B Copper ✓
C Molybdenum
D Selenium

Explanation

Copper is a cofactor for the enzyme nitric oxide synthase, which is involved in the production of nitric oxide, a key molecule in vascular relaxation and immune function.

Source

Scientific literature, PubMed
Minerals and Trace Elements Biochemistry and Molecular Biology Enzyme Cofactors Hard MEDICAL Confidence: medium