1. The liver secretes a chemical compound called bile, which contains no enzymes.   True   False   2. Erepsin is an enzyme contained in _______ juice.   intestinal   gastric   pancreatic   Hint Half-n-half Clue   3. Which enzyme acts on starch in the mouth and converts it into maltose?   lipase   lactase   ptyalin   pepsin   Half-n-half Clue   4. The large intestine does not secrete any enzymes.   True   False   5. Enzymes help to quicken the rate of chemical reactions in a living body and undergo changes during this process.   True   False   6. Pepsin is an enzyme contained in _______ juice.   intestinal   gastric   pancreatic   Half-n-half Clue   7. Invertase is an enzyme present in the _______.   ileum   duodenum   jejunum   Half-n-half Clue