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






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






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






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






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






6. Vessels of the lymphatic system






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






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. Secreted from intestinal mucos for digestion of lactose






10. 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






11. Unable to synthesize their own nutrients






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






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






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






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






16. Produced by the pancreas for fat digestion






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






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






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






20. Produced by the pancreas for protein digestion






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






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






23. Enzyme in saliva which hydrolyzes starch to maltose






24. Produces enzymes such as amylase - trypsin - lipase






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






26. 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






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






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






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






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






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






32. Produced by the pancreas to digest carbohydrates






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






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






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






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






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






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






39. To grind the food






40. Secreted from the intestinal mucosa for fat digestion






41. Improve food digestion






42. Uses intracellular and extracellular digestion






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






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






45. Place to store food






46. Biting and chewing action of teeth






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






48. Secretes two substances: intrinsic factor and hydrchloric acid






49. Secreted from the intestinal mucosa for polypeptide digestion






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