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






2. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine






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






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






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






6. Converted to pepsin and synthesized by chief cells






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






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






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






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






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






12. Contains a typholosole to provide increased surface area for digestiona nd absorption






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






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






15. Lacking lactase enzyme






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






17. Secreted from intestinal mucos for digestion of lactose






18. Accomplished by enzymatic hydrolysis -nutrients pass through the semipermeable plasma membrane of the gut cells to be further metabolized or transported






19. Line the gastrovascular cavity secrete enzymes into the cavity






20. Produced by the pancreas for fat digestion






21. Produces enzymes such as amylase - trypsin - lipase






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






23. Secreted from the intestinal mucosa for fat digestion






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






25. The muscular tube leading from the mouth to the stomach






26. Secretes two substances: intrinsic factor and hydrchloric acid






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






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






29. Produced by the pancreas to digest carbohydrates






30. 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






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






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






33. Produced by the pancreas for protein digestion






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






35. Patients usually have a decreased lower esophageal reflux pressure - leading to an increased passage of stomach contents into the esophagus






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






37. Unable to synthesize their own nutrients






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






39. Where mechanical and chemical digestion of food begins






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






41. Food is moved down the esophagus by this rhythmic waves of involuntary muscular contraction






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






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






44. Vessels of the lymphatic system






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






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






47. Secretion of the parietal cells that facilitates the absorption of vitamin b12 across the intestinal lining






48. Secreted from the intestinal mucosa for polypeptide digestion






49. Uses intracellular and extracellular digestion






50. Enzyme in saliva which hydrolyzes starch to maltose