1. Which of the following statements about enzymes is false?   Enzymes are required in very small quantities.   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 vitamins by nature.   Hint Half-n-half Clue   2. Pepsin is an enzyme contained in _______ juice.   pancreatic   intestinal   gastric   Half-n-half Clue   3. Enzymes help to quicken the rate of chemical reactions in a living body and undergo changes during this process.   True   False   4. Invertase is an enzyme present in the _______.   ileum   jejunum   duodenum   Half-n-half Clue   5. Erepsin is an enzyme contained in _______ juice.   gastric   pancreatic   intestinal   Half-n-half Clue   6. Amylopsin is an enzyme present in the _______.   jejunum   ileum   duodenum   Half-n-half Clue   7. Trypsin is an enzyme contained in _______ juice.   intestinal   gastric   pancreatic   Half-n-half Clue