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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. 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






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






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






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






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






6. To grind the food






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






8. Lacking lactase enzyme






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






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






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






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






13. Secreted from the intestinal mucosa for polypeptide digestion






14. 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






15. Secretes two substances: intrinsic factor and hydrchloric acid






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






17. Biting and chewing action of teeth






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






19. Enzyme in saliva which hydrolyzes starch to maltose






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






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






22. Produced by the pancreas for protein digestion






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






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






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






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






27. Converted to pepsin and synthesized by chief cells






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






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






30. Unable to synthesize their own nutrients






31. Secreted from the intestinal mucosa for fat digestion






32. Line the gastrovascular cavity secrete enzymes into the cavity






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






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






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






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






37. Where mechanical and chemical digestion of food begins






38. Produced by the pancreas to digest carbohydrates






39. Improve food digestion






40. Produces enzymes such as amylase - trypsin - lipase






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






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






43. Secreted from intestinal mucos for digestion of lactose






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






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






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






47. Produced by the pancreas for fat digestion






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






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






50. Uses intracellular and extracellular digestion