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






2. Secreted from the intestinal mucosa for polypeptide digestion






3. Secretes two substances: intrinsic factor and hydrchloric acid






4. Line the gastrovascular cavity secrete enzymes into the cavity






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






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






7. To grind the food






8. Where mechanical and chemical digestion of food begins






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






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






11. Uses intracellular and extracellular digestion






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






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






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






15. Produces enzymes such as amylase - trypsin - lipase






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






17. Vessels of the lymphatic system






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






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






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






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






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






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






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






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






26. Converted to pepsin and synthesized by chief cells






27. Secreted from the intestinal mucosa for fat digestion






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






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






30. Place to store food






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






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






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






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






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






36. Enzyme in saliva which hydrolyzes starch to maltose






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






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






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






40. Lacking lactase enzyme






41. Produced by the pancreas for fat digestion






42. Secreted from intestinal mucos for digestion of lactose






43. Produced by the pancreas for protein digestion






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






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






46. Improve food digestion






47. Unable to synthesize their own nutrients






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






49. 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






50. 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