Test your basic knowledge |

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






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






3. Enzyme in saliva which hydrolyzes starch to maltose






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






5. 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






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






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






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






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






10. Converted to pepsin and synthesized by chief cells






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






12. Place to store food






13. Produced by the pancreas for protein digestion






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






15. Produces enzymes such as amylase - trypsin - lipase






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






17. Line the gastrovascular cavity secrete enzymes into the cavity






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






19. Vessels of the lymphatic system






20. Secreted from intestinal mucos for digestion of lactose






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






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






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






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






25. Where mechanical and chemical digestion of food begins






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






27. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine






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






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






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






31. Secreted from the intestinal mucosa for polypeptide digestion






32. Improve food digestion






33. Unable to synthesize their own nutrients






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






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






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






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






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






39. Lacking lactase enzyme






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






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






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






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






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






45. 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






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






47. Secreted from the intestinal mucosa for fat digestion






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






49. To grind the food






50. Uses intracellular and extracellular digestion