Which of the Following Amino Acids is Critical for Choline

Question

Which of the following amino acids is critical for choline and phosphatidylcholine synthesis?
A)serine
B)$\beta$-alanine
C)homocysteine
D)methionine
E)homoserine

Accepted Answer

Methionine is critical for choline and phosphatidylcholine synthesis as it is a precursor for S-adenosylmethionine (SAM), which donates a methyl group to phosphatidylethanolamine to form phosphatidylcholine.