<prompt> The molecule which is the initiator of cataract formation in the lens of the eye and whose 1-phosphate derivative is responsible for liver failure isSorbitolGalactitolInositolMannitol  <response>: Ans. b GalactitolRef: American Academy of Ophthalmology, BSCS, Section 11 p. 61In Classic Galactosemia AR defect in galactose 1-phosphate uridyltransferase Gal-1-PUT, results in inability to convert galactose to glucose.Galactose accumulates with further metabolic conversion to galactitoldulcitol responsible for cataract and galactose -1- phosphate responsible for liver failure. 