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PCAT Biology Digestion

Subjects : pcat, biology
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Food is moved down the esophagus by this rhythmic waves of involuntary muscular contraction






2. Secreted from intestinal mucosa for digestion of maltose - lactose - sucrose






3. Finger like projections that extend out of the intestinal wall -contain capillaries and lacteals






4. Produced by the pancreas to digest carbohydrates






5. Refers to the enzymatic breakdown of macromolecules into smaller molecules and begins in the mouth when the salivary glands secrete saliva






6. (Insects) have a digestive system similar to that of the earthworm






7. Have one way digestive tract with both a mouth and an anus






8. Begins with oral cavity and continues with the pharynx - the esophagus - stomach - small inestine - large intestive - then anus






9. Secreted by the stomach that is a protein-hydrloyzing enzyme - and hydrochloric acd - which kills bacteria - dissolves the intercellular 'glue' holding food tissues together - and activates certain proteins






10. Secreted from the intestinal mucosa for fat digestion






11. Secretes two substances: intrinsic factor and hydrchloric acid






12. Degradation of large molecules into smaller molecules that can be absorbed into the bloodstream and used directly by cells






13. Converted to pepsin and synthesized by chief cells






14. Secreted by the glands of the stomach which protects the stomach lining from the harshly acidic juices present in the stomach






15. To grind the food






16. Occurs within the cell - usually in membrane-bound vesicles






17. Produced and stored in the I cells of the duodenal and jejunal mucosa






18. Enzymes are secreted to digest the fly and absorb the soluble end products






19. Produced by the pancreas for fat digestion






20. Stimulates the parietal cells to produce a substance (HCl) that denatures proteins and activates digestive enzymes






21. A large - muscular organ located in the upper abdomen - stores and partially digests food






22. Line the gastrovascular cavity secrete enzymes into the cavity






23. Enzyme in saliva which hydrolyzes starch to maltose






24. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine






25. Large particles of food into small particles begins by cutting and grinding in the mouth and churning in the digestive tract






26. Enzymes are secreted - hydrolyzing complex nutrients into simpler molecules - which are then absorbed






27. Produces bile in the gall bladder before release into the small intestine






28. Restin pressures of the lower esophageal sphincter normally range from 15-35mmHg above gastric baseline pressure






29. Emulsifies fats - breaking down large globules into small droplets (contains no enzymes)






30. Decreased lower esophageal sphincter pressure is not always associated with the development of GERD; however - the majority of patients






31. The breakdown of large food particles into smaller particles through mastication






32. Bring food to the mouth (ingestion) and release the particles intoa cup-like sac






33. Vessels of the lymphatic system






34. Biting and chewing action of teeth






35. An acidic - semifluid mixture of partially digested food produced from the churning of the stomach






36. Pseudopods surround and engulf food and enclose it in food vacuoles






37. Secreted from the intestinal mucosa for polypeptide digestion






38. Secreted from intestinal mucos for digestion of lactose






39. Lacking lactase enzyme






40. Where mechanical and chemical digestion of food begins






41. Fuse with the food vacuole and release their digestive enzymes that act upon the nutrients






42. Uses intracellular and extracellular digestion






43. Refers to a digestive process that occurs outside of the cell - within a lumen or tract






44. A typical saprophyte that lives on dead organic material - that secrete enzymes into the external environment (on bread)






45. Can occur after spontaneous transient lower esophageal sphincter relaxations not associated with swallowing






46. Produced by the pancreas for protein digestion






47. Improve food digestion






48. When nutrients are required for plants - the storage polymers are broken down to simpler molecules by enzyme hydrolysis






49. Place to store food






50. Provides for transient storage of feces before elimination through the anus