Which nutrient plays a crucial role in the synthesis of Carnitine, a molecule essential for fatty acid transport into mitochondria?

A Vitamin C
B Vitamin B6
C Vitamin B3 (Niacin)
D Lysine ✓

Explanation

Lysine is an amino acid that serves as a precursor for the synthesis of carnitine, which is vital for the transport of fatty acids into mitochondria for beta-oxidation.

Source

Biochemistry textbooks by Stryer and Berg
Metabolic and Nutritional Disorders Nutrition and Metabolism Fatty Acid Metabolism Hard MEDICAL Confidence: medium