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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. Lubricates food to facilitate swallowing and provides a solvent for food particles =secreted in response toa nervous reflex triggered by the presence of food in the oral cavity






2. Biting and chewing action of teeth






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






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






5. Converted to pepsin and synthesized by chief cells






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






7. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine






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






9. Produced by the pancreas for fat digestion






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






11. Uses intracellular and extracellular digestion






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






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






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






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






16. 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






17. Produces enzymes such as amylase - trypsin - lipase






18. Completes chemical digestion -divided into three section: duodenum - jejunum - and the ileum -highly adapted to absorption






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






20. To grind the food






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






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






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






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






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






26. Secreted from the intestinal mucosa for fat digestion






27. Lacking lactase enzyme






28. Unable to synthesize their own nutrients






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






30. Place to store food






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






32. Produced by the pancreas to digest carbohydrates






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






34. Secretes two substances: intrinsic factor and hydrchloric acid






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






36. Produced by the pancreas for protein digestion






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






38. Where mechanical and chemical digestion of food begins






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






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






41. Enzyme in saliva which hydrolyzes starch to maltose






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






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






44. Vessels of the lymphatic system






45. Line the gastrovascular cavity secrete enzymes into the cavity






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






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






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






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






50. Secreted from intestinal mucos for digestion of lactose






Can you answer 50 questions in 15 minutes?



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