6. An alkaline environment is required in the duodenum to A. activate pepsinogen. B. activate intestinal and pancreatic enzymes. C. activate bile salts. D. produce mucus. E. give feces its characteristic brown color. 7. Which of the following is a major cause of liver cancer? A. Anorexia B. Acute pancreatitis C. Hemorrhage D. Cirrhosis E. Hepatomegaly 8. Which of the following can lead to acute pancreatitis? A. Malnutrition B. Blockage of bile duct C. Hemorrhage D. Smoking E. H. pylori infection 9. Pyelonephritis may be distinguished from cystitis by the presence in pyelonephritis of A. bacteria in urine. B. leukocytes in urine. C. painful urination. D. frequent urination. E. urinary casts.

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