Which of the following nutrients is essential for the synthesis of heme, a critical component of hemoglobin?

A Vitamin B12
B Folate
C Iron ✓
D Copper

Explanation

Iron is a critical nutrient for the synthesis of heme, a component of hemoglobin that plays a central role in oxygen transport.

Mnemonic

Iron = Integral for oxygen transport

Source

Harper's Illustrated Biochemistry
Metabolic and Nutritional Disorders Nutrition and Biochemistry Heme Synthesis and Iron Metabolism Easy MEDICAL Confidence: high