Digestive System Test - Aiken PDF

1. What is the main function of saliva in the digestive process? A. Absorbing nutrients B. Breaking down proteins C. Softening and moistening food D. Absorbing water ANSWER: C 2. Which enzyme is present in saliva? A. Protease B. Lipase C. Amylase D. Pepsin ANSWER: C 3. What type of muscle moves fo...

1. What is the main function of saliva in the digestive process? A. Absorbing nutrients B. Breaking down proteins C. Softening and moistening food D. Absorbing water ANSWER: C 2. Which enzyme is present in saliva? A. Protease B. Lipase C. Amylase D. Pepsin ANSWER: C 3. What type of muscle moves food down the esophagus? A. Cardiac muscle B. Skeletal and smooth muscle C. Smooth muscle only D. Skeletal muscle only ANSWER: B 4. What is the primary role of the stomach in digestion? A. Absorbing water B. Producing bile C. Breaking down food with acid and enzymes D. Transporting nutrients to the bloodstream ANSWER: C 5. What makes the stomach's acid special? A. It absorbs fats B. It helps break down food into liquid or paste C. It neutralizes toxins D. It stores vitamins ANSWER: B 6. How many parts does the small intestine have? A. Two B. Three C. Four D. Five ANSWER: B 7. What is the function of the duodenum? A. Storing bile B. Breaking down sugars C. Receiving food from the stomach D. Absorbing vitamins ANSWER: C 8. Which part of the small intestine absorbs most nutrients? A. Duodenum B. Ileum C. Jejunum D. Rectum ANSWER: C 9. What connects the ileum to the large intestine? A. Esophagus B. Rectum C. Duodenum D. Ileum ANSWER: D 10. How long is the small intestine if uncured? A. About five meters B. About six meters C. About seven meters D. About eight meters ANSWER: C 11. What is one of the main jobs of the large intestine? A. Breaking down proteins B. Absorbing water and electrolytes C. Storing bile D. Mixing food with acid ANSWER: B 12. What does the rectum do? A. Absorbs nutrients B. Produces bile C. Signals the brain about feces D. Breaks down starches ANSWER: C 13. Which organ produces bile? A. Liver B. Gallbladder C. Pancreas D. Stomach ANSWER: A 14. What is the main job of bile? A. Breaking down proteins B. Digesting fats C. Absorbing water D. Storing vitamins ANSWER: B 15. What does the pancreas produce to help with digestion? A. Acid B. Enzymes C. Bile D. Electrolytes ANSWER: B 16. Which hormone does the pancreas produce? A. Bile B. Insulin C. Pepsin D. Lipase ANSWER: B 17. What is stored in the gallbladder? A. Fats B. Proteins C. Bile D. Enzymes ANSWER: C 18. What happens when we eat fatty foods? A. The pancreas releases bile B. The gallbladder squeezes bile into the small intestine C. The liver absorbs fats D. The rectum signals the brain ANSWER: B 19. Why does the esophagus have skeletal muscles? A. For swallowing B. For breaking down food C. For absorbing water D. For mixing food with acid ANSWER: A 20. Which nutrient is broken down by the enzyme amylase? A. Proteins B. Fats C. Starches D. Vitamins ANSWER: C 21. What part of the small intestine connects to the stomach? A. Ileum B. Jejunum C. Duodenum D. Rectum ANSWER: C 22. Which organ absorbs vitamins? A. Stomach B. Small intestine C. Large intestine D. Pancreas ANSWER: C 23. What does the rectum hold until it is ready to be evacuated? A. Bile B. Water C. Feces D. Nutrients ANSWER: C 24. Which organ purifies blood with absorbed nutrients? A. Liver B. Stomach C. Gallbladder D. Esophagus ANSWER: A 25. What does the stomach mix food with? A. Bile and enzymes B. Acid and enzymes C. Water and vitamins D. Saliva and bile ANSWER: B 26. Why is it important for saliva to soften and moisten food before swallowing? A. To make food taste better B. To help food move easily through the esophagus C. To prevent food from being digested D. To increase the amount of acid in the stomach ANSWER: B 27. What might happen if the pancreas stopped producing insulin? A. Fat digestion would increase B. Blood sugar levels would not be regulated C. Starch digestion would stop D. The large intestine would absorb more water ANSWER: B 28. Why is the small intestine so long? A. To store food for later digestion B. To have enough space to absorb nutrients C. To produce bile D. To mix food with acid ANSWER: B 29. Why does the gallbladder release more bile when fatty foods are eaten? A. To neutralize stomach acid B. To digest fats more effectively C. To store more nutrients D. To increase water absorption ANSWER: B 30. What could happen if the large intestine did not absorb water? A. Stomach acid would be too strong B. Feces would become too solid C. Feces would be watery D. Nutrients would not be digested ANSWER: C 31. How does the liver’s purification of blood benefit the body? A. It helps digest fats B. It ensures harmful substances are removed C. It stores bile D. It absorbs vitamins ANSWER: B 32. Why is it important for the rectum to signal the brain about feces? A. To regulate digestion B. To prevent the overproduction of bile C. To allow for controlled elimination D. To absorb more water ANSWER: C 33. What would happen if the stomach’s acid were not strong enough? A. Food would not be mixed properly B. Starch digestion would stop C. Proteins would not be broken down effectively D. Water absorption would increase ANSWER: C 34. Why is it beneficial for the jejunum to absorb the majority of nutrients? A. It shortens the digestion process B. It ensures nutrients are available for the body quickly C. It reduces the workload of the ileum D. It helps break down fats faster ANSWER: B 35. How does the pancreas’s production of enzymes contribute to digestion? A. By breaking down all types of food molecules B. By absorbing vitamins and minerals C. By increasing bile production D. By purifying blood ANSWER: A 36. What organ connects the small intestine to the rectum? A. Stomach B. Large intestine C. Liver D. Pancreas ANSWER: B 37. Which part of the digestive system signals the brain when it’s time to eliminate waste? A. Duodenum B. Jejunum C. Rectum D. Esophagus ANSWER: C 38. What organ processes and purifies blood? A. Gallbladder B. Liver C. Stomach D. Pancreas ANSWER: B 39. What helps break down starches in the digestive system? A. Protease B. Amylase C. Lipase D. Insulin ANSWER: B 40. Where is bile stored before being used? A. Liver B. Gallbladder C. Stomach D. Pancreas ANSWER: B 41. What is the primary role of the large intestine? A. Digesting fats B. Absorbing water and pushing feces C. Producing enzymes D. Mixing food with acid ANSWER: B 42. What organ helps digest fats with bile? A. Gallbladder B. Pancreas C. Stomach D. Liver ANSWER: D 43. What might happen if the small intestine were much shorter? A. Food would move too slowly B. Nutrient absorption would decrease C. Starch digestion would stop D. Feces would be watery ANSWER: B 44. How does the esophagus move food? A. By using acid B. By peristalsis C. By storing food D. By absorbing nutrients ANSWER: B 45. What part of the large intestine absorbs vitamins? A. Rectum B. Jejunum C. Colon D. Ileum ANSWER: C 46. Why does the small intestine have three sections? A. To separate types of food B. To complete different digestion and absorption functions C. To speed up bile production D. To regulate stomach acid ANSWER: B 47. What might happen if the liver stopped producing bile? A. Digestion of fats would decrease B. Blood would not be purified C. Water absorption would stop D. Enzyme production would increase ANSWER: A 48. Which organ mixes food with acid and enzymes? A. Liver B. Stomach C. Pancreas D. Gallbladder ANSWER: B 49. What does the pancreas’s insulin help regulate? A. Bile production B. Starch digestion C. Blood sugar levels D. Water absorption ANSWER: C 50. Why is the stomach’s ability to hold food important? A. It speeds up digestion B. It ensures food is broken down before entering the intestine C. It absorbs nutrients quickly D. It prevents acid from entering the small intestine ANSWER: B