The enzyme enterokinase helps in the conversion of
(a) pepsinogen into pepsin
(b) trypsinogen into trypsin
(c) caseinogen into casein
(d) proteins into polypeptides
(b) Enterokinase helps in conversion of trypsinogen into trypsin in small intestine, which is an endoproteolytic enzyme and hydrolyses the peptones and proteoses into peptides.