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






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






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






4. Produced by the pancreas for fat digestion






5. Uses intracellular and extracellular digestion






6. Secretes two substances: intrinsic factor and hydrchloric acid






7. To grind the food






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






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






10. Secreted from the intestinal mucosa for polypeptide digestion






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






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






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






14. Produces enzymes such as amylase - trypsin - lipase






15. Produced by the pancreas to digest carbohydrates






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






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






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






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






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






21. Line the gastrovascular cavity secrete enzymes into the cavity






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






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






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






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






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






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






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






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






30. Place to store food






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






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






33. 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






34. Biting and chewing action of teeth






35. Produced by the pancreas for protein digestion






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






37. 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






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






39. Enzyme in saliva which hydrolyzes starch to maltose






40. Where mechanical and chemical digestion of food begins






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






42. Secreted from the intestinal mucosa for fat digestion






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






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






45. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine






46. Vessels of the lymphatic system






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






48. Unable to synthesize their own nutrients






49. Lacking lactase enzyme






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