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. Secreted from intestinal mucos for digestion of lactose






2. 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






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






4. To grind the food






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






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






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






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






9. Produces enzymes such as amylase - trypsin - lipase






10. Lacking lactase enzyme






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






12. Synthesized and stored in the S cells of the upper intestine -stimulates the secretion of bicarbonate-containing substances from the pancreas and inhibits gastric emptying and gastric acid production






13. 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






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






15. Improve food digestion






16. Line the gastrovascular cavity secrete enzymes into the cavity






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






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






19. Biting and chewing action of teeth






20. Secretes two substances: intrinsic factor and hydrchloric acid






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






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






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






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






25. Place to store food






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






27. Uses intracellular and extracellular digestion






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






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






30. Where mechanical and chemical digestion of food begins






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






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






33. Enzyme in saliva which hydrolyzes starch to maltose






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






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






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






37. Produced by the pancreas for fat digestion






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






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






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






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






42. Produced by the pancreas to digest carbohydrates






43. Secreted from the intestinal mucosa for fat digestion






44. Produced by the pancreas for protein digestion






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






46. Converted to pepsin and synthesized by chief cells






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






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






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






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