NEET Biology question
Not in NEET syllabus
Which action of digestive enzyme is/are correct regarding its site of action, substrate and the end product?
| S.No. | Enzyme | Site of Action | Substrate | End Product | |---|---|---|---|---| | I | Rennin | Calf's stomach | Casein | Ca-paracaseinate | | II | Pepsin | Human's stomach | Proteins | Two or more molecules of amino acid (peptones/proteoses) | | III | Nuclease | Small intestine | Nucleosides | Nucleosides and iPO4 | | IV | Enterokinase | Small intestine | Trypsinogen | Trypsin |
Solution
Row III is incorrect because pancreatic **nucleases** (DNase and RNase) act on **nucleic acids** (DNA and RNA) to yield **nucleotides** (whereas nucleotidases convert nucleotides into nucleosides + iPO4). Rows I (rennin converts casein into calcium
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