<prompt> What is involved in the formation of d-TMP from d-UMP?N5, N10-methylene tetrahydrofolateForm imino folateN5 formyl folateDihydro folate  <response>: The following reaction is catalyzed by thymidylate synthetase:5,10-methylenetetrahydrofolate dUMP dihydrofolate dTMPBy means of reductive methylation, deoxyuridine monophosphate dUMP and N5, N10-methylene tetrahydrofolate together used to form dTMP, yielding dihydrofolate as a secondary product. 