1. Which enzyme acts on starch in the mouth and converts it into maltose?   lipase   ptyalin   lactase   pepsin   Hint Half-n-half Clue   2. Which of the following statements about enzymes is false?   Enzymes are vitamins by nature.   Enzymes act on a specific substrate to form a specific product.   Enzymes act best between a narrow range of temperature known as 'optimum temperature'.   Enzymes are required in very small quantities.   Half-n-half Clue   3. Erepsin is an enzyme contained in _______ juice.   pancreatic   intestinal   gastric   Half-n-half Clue   4. Pepsin is an enzyme contained in _______ juice.   pancreatic   intestinal   gastric   Half-n-half Clue   5. Amylopsin is an enzyme present in the _______.   ileum   duodenum   jejunum   Half-n-half Clue   6. Which enzyme does not act on fats?   ptyalin   lipase   steapsin   Half-n-half Clue   7. Which enzyme does not act on proteins?   trypsin   amylopsin   pepsin   erepsin   Half-n-half Clue