1. Which enzyme acts on starch in the mouth and converts it into maltose?   pepsin   ptyalin   lipase   lactase   Hint Half-n-half Clue   2. Invertase is an enzyme present in the _______.   duodenum   ileum   jejunum   Half-n-half Clue   3. Which enzyme is not present in pancreatic juice?   steapsin   pepsin   trypsin   amylopsin   Half-n-half Clue   4. Which enzyme does not act on fats?   ptyalin   steapsin   lipase   Half-n-half Clue   5. Which enzyme is produced only in children?   amylopsin   trypsin   pepsin   rennin   Half-n-half Clue   6. Which enzyme does not act on carbohydrates?   invertase   steapsin   amylopsin   ptyalin   Half-n-half Clue   7. The large intestine does not secrete any enzymes.   True   False