Maths Group11

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Biology some questions from grade 9 unit 3 about the digestive system: Choose the best answer! 1. Which of the following is NOT a primary function of the digestive system? A. Nutrient absorption B. Waste removal C. Hormone production D. Immune function 2. Where does the process of digestion begin? A. Stomach B. Small intestine C. Mouth D. Large intestine 3. What is the primary function of saliva? A. To break down proteins B. To absorb nutrients C. To lubricate food and begin carbohydrate digestion D. To neutralize stomach acid 4. Which of the following enzymes breaks down proteins in the stomach? A. Amylase B. Lipase C. Pepsin D. Lactase 5. What is the role of the stomach's churning action? A. To absorb nutrients B. To produce bile C. To break down food into smaller pieces D. To regulate blood sugar levels 6. What is the name of the muscular contractions that move food through the digestive tract? A. Peristalsis B. Segmentation C. Digestion D. Absorption 7. Which part of the digestive system is responsible for the majority of nutrient absorption? A. Stomach B. Small intestine C. Large intestine D. Esophagus 8. What is the function of bile? A. To break down carbohydrates B. To neutralize stomach acid C. To emulsify fats D. To produce enzymes 9. Where is bile produced? A. Pancreas B. Liver C. Gallbladder D. Stomach 10. What is the main function of the large intestine? A. Nutrient absorption B. Water absorption and waste formation C. Protein digestion D. Production of bile 11. Which of the following is NOT a digestive enzyme? A. Pepsin B. Amylase C. Lipase D. Insulin 12. What is the name of the valve that controls the flow of food from the stomach into the small intestine? A. Pyloric sphincter B. Esophageal sphincter C. Anal sphincter D. Ileocecal valve 13. Which type of food molecule is broken down by lipase? A. Carbohydrates B. Proteins C. Fats D. Nucleic acids 14. What is the name of the tiny finger-like projections in the small intestine that increase surface area for absorption? A. Villi B. Microvilli C. Crypts D. Peyer's patches 15. What is the function of the villi? A. To produce digestive enzymes B. To absorb nutrients C. To regulate blood sugar levels D. To store bile 16. Which of the following is NOT a benefit of the gut microbiota (bacteria in the large intestine)? A. Production of some vitamins B. Breakdown of undigested material C. Strengthening the immune system D. Production of insulin 17. What is the name of the condition where the stomach contents flow back into the esophagus? A. Ulcer B. Heartburn C. Constipation D. Diarrhea 18. Which of the following is a common symptom of indigestion? A. Nausea B. Constipation C. Diarrhea D. All of the above 19. What is the name of the process by which the body gets rid of waste products through the digestive system? A. Digestion B. Absorption C. Elimination D. Metabolism 20. Which of the following is a common digestive disorder? A. Irritable bowel syndrome (IBS) B. Crohn's disease C. Celiac disease D. All of the above Prepared by Maths group11.