Pharmacology Which of the following metabolic reactions require vitamin B12 but not folate? A Conversion of malonic acid to succinic acid B Conversion of homocysteine to methionine C Conversion of serine to glycine D Thymidylate synthesis 💡 Explanation Which of the following metabolic reactions require vitamin B12 but not folate? ✓ Correct Answer: A. Conversion of malonic acid to succinic acid