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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. Secreted from the intestinal mucosa for fat digestion






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






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






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






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






6. To grind the food






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






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






9. Produced by the pancreas for fat digestion






10. Line the gastrovascular cavity secrete enzymes into the cavity






11. Converted to pepsin and synthesized by chief cells






12. 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






13. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine






14. 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






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






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






17. Produces enzymes such as amylase - trypsin - lipase






18. Lacking lactase enzyme






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






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






21. Secretes two substances: intrinsic factor and hydrchloric acid






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






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






24. Produced by the pancreas for protein digestion






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






26. Secreted from intestinal mucos for digestion of lactose






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






28. Vessels of the lymphatic system






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






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






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






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






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






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






35. Uses intracellular and extracellular digestion






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






37. Biting and chewing action of teeth






38. Place to store food






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






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






41. Secreted from the intestinal mucosa for polypeptide digestion






42. Produced by the pancreas to digest carbohydrates






43. 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






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






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






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






47. Unable to synthesize their own nutrients






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






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






50. Enzyme in saliva which hydrolyzes starch to maltose