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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. Produced by the pancreas to digest carbohydrates






2. Vessels of the lymphatic system






3. Lacking lactase enzyme






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






5. Secreted from the intestinal mucosa for polypeptide digestion






6. Secretes two substances: intrinsic factor and hydrchloric acid






7. Secreted from intestinal mucos for digestion of lactose






8. Unable to synthesize their own nutrients






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






11. 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






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






13. Produces enzymes such as amylase - trypsin - lipase






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






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






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






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






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






19. Enzyme in saliva which hydrolyzes starch to maltose






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






21. Line the gastrovascular cavity secrete enzymes into the cavity






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






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






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






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






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






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






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






29. Synthesized and stored in the S cells of the upper intestine -stimulates the secretion of bicarbonate-containing substances from the pancreas and inhibits gastric emptying and gastric acid production






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






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






32. Produced by the pancreas for protein digestion






33. Place to store food






34. Biting and chewing action of teeth






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






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






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






38. Secreted from the intestinal mucosa for fat digestion






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






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






41. Produced by the pancreas for fat digestion






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






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






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






45. Where mechanical and chemical digestion of food begins






46. To grind the food






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






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






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






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