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






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






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






4. Place to store food






5. Where mechanical and chemical digestion of food begins






6. Vessels of the lymphatic system






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






8. 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






9. Uses intracellular and extracellular digestion






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






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






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






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






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






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






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






17. Secreted from the intestinal mucosa for fat digestion






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






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






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






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






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






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






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






25. Secretes two substances: intrinsic factor and hydrchloric acid






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






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






28. Line the gastrovascular cavity secrete enzymes into the cavity






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






30. 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






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






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






33. Produced by the pancreas for protein digestion






34. Produced by the pancreas for fat digestion






35. Secreted from intestinal mucos for digestion of lactose






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






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






38. Lacking lactase enzyme






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






40. Secreted from the intestinal mucosa for polypeptide digestion






41. To grind the food






42. Produced by the pancreas to digest carbohydrates






43. Biting and chewing action of teeth






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






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






46. Unable to synthesize their own nutrients






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






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






49. Converted to pepsin and synthesized by chief cells






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