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






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






4. Produced by the pancreas to digest carbohydrates






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






6. Uses intracellular and extracellular digestion






7. Lacking lactase enzyme






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






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






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






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






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






13. Produced by the pancreas for fat digestion






14. Place to store food






15. Secretes two substances: intrinsic factor and hydrchloric acid






16. Produces enzymes such as amylase - trypsin - lipase






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






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






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






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






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






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






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






24. Unable to synthesize their own nutrients






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






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






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






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






29. Produced by the pancreas for protein digestion






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. Secreted from the intestinal mucosa for polypeptide digestion






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






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






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






35. 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






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






37. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine






38. Vessels of the lymphatic system






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






40. Line the gastrovascular cavity secrete enzymes into the cavity






41. Secreted from intestinal mucos for digestion of lactose






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






43. Where mechanical and chemical digestion of food begins






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






45. To grind the food






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






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






48. Biting and chewing action of teeth






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






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