Q. Which action of digestive enzyme is/are correct regarding its site of action, substrate and the end product? [table] | Enzy me | Site of Action | Sub strate | End product ; i | Rennin | Calf’s stomach | Casein | Ca Parac aesinate ; ii | Pepsin | Human’s stomach | Prote ins | Two or more mole cule of a mino acid ; iii | Nucl ease | Small intes tine | Nucleo sides | Nucleo sides a nd -$iPO_{4}$ ; iv | Entero- kinase | Small intes tine | Trypsi nogen | Trypsin [/table]
A) All actions are correct
B) Actions I, II and III are correct
C) Action I, II and IV are correct
D) Only action III is correct
Explanation
Digestion of nucleic acids takes place in the small intestine. These are digested in small intestine by the enzymes present in intestinal and pancreatic juices like DNA $\underset{Pancreatic\ juice}{\overset{\ \ DNase\ (deoxyribonucleaes)\ }{\rightarrow}}$ Deoxyribonucleotides Deoxyribonucleotides$\ \underset{Intestinal\ Juice}{\overset{\ \ \ \ Nucleotidases\ \ \ }{\rightarrow}}$ Nucleosides + $iPO_{4}$ Nucleosides $\underset{Intestinal\ juice}{\overset{\ \ \ \ \ Nucleosidases\ \ \ \ }{\rightarrow}}$Purine/Pyrimidine + 5-C sugar (Pentose) (Pentose)
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.