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






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






3. 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






4. Secreted from intestinal mucos for digestion of lactose






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






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






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






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






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






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






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






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






13. To grind the food






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






15. Produced by the pancreas for fat digestion






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






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






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






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






20. 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






21. Vessels of the lymphatic system






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






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






24. Secreted from the intestinal mucosa for fat digestion






25. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine






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






27. Uses intracellular and extracellular digestion






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






29. Produces enzymes such as amylase - trypsin - lipase






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






31. Biting and chewing action of teeth






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






33. Converted to pepsin and synthesized by chief cells






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






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






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






37. Line the gastrovascular cavity secrete enzymes into the cavity






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






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






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






41. Produced by the pancreas to digest carbohydrates






42. Produced by the pancreas for protein digestion






43. Lacking lactase enzyme






44. Where mechanical and chemical digestion of food begins






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






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






47. Enzyme in saliva which hydrolyzes starch to maltose






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






49. Place to store food






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