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






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






3. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine






4. Secretes two substances: intrinsic factor and hydrchloric acid






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






6. To grind the food






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






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






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






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






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






12. 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






13. Secreted from the intestinal mucosa for polypeptide digestion






14. Produces enzymes such as amylase - trypsin - lipase






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






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






17. Produced by the pancreas to digest carbohydrates






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






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






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






21. Secreted from the intestinal mucosa for fat digestion






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






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






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






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






26. Line the gastrovascular cavity secrete enzymes into the cavity






27. Unable to synthesize their own nutrients






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






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






30. Improve food digestion






31. Converted to pepsin and synthesized by chief cells






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






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






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






35. Where mechanical and chemical digestion of food begins






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






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






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






39. Produced by the pancreas for fat digestion






40. Secreted from intestinal mucos for digestion of lactose






41. Produced by the pancreas for protein digestion






42. Enzyme in saliva which hydrolyzes starch to maltose






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






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






45. Place to store food






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






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






48. Vessels of the lymphatic system






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






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