Which vitamin plays a crucial role in the synthesis of heme, an essential component of hemoglobin?

A Vitamin B6
B Vitamin B12 ✓
C Vitamin C
D Vitamin E

Explanation

Vitamin B12 is necessary for the synthesis of heme, which is a critical component of hemoglobin. Hemoglobin is the protein in red blood cells that carries oxygen from the lungs to the rest of the body.

Mnemonic

B12 = Blood 12 → essential for blood

Source

Guyton and Hall Textbook of Medical Physiology
Vitamins Biochemistry Heme Synthesis Medium MEDICAL Confidence: high