Vitamin B Complex — Topic Test
20 questions · exam mode (answers revealed at the end). 18 min suggested.
A 3-week-old neonate develops poor feeding, lethargy, and a characteristic sweet odour of the urine. Plasma shows raised leucine, isoleucine, and valine, and dinitrophenylhydrazine testing of urine is positive. The defective enzyme complex requires which vitamin-derived cofactor as one of its components?
ABiotin
BTetrahydrofolate
CPyridoxal phosphate
DThiamine pyrophosphate