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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. The muscular tube leading from the mouth to the stomach






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






3. Secreted from intestinal mucos for digestion of lactose






4. Produces enzymes such as amylase - trypsin - lipase






5. Unable to synthesize their own nutrients






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






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






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






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






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






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






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






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






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






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






16. To grind the food






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






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






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






20. Secreted from the intestinal mucosa for fat digestion






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






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






23. Lacking lactase enzyme






24. Converted to pepsin and synthesized by chief cells






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






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






27. Secretes two substances: intrinsic factor and hydrchloric acid






28. Line the gastrovascular cavity secrete enzymes into the cavity






29. Produced by the pancreas to digest carbohydrates






30. Uses intracellular and extracellular digestion






31. Place to store food






32. 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






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






34. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine






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






36. Vessels of the lymphatic system






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






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






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






40. 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






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






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






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






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






45. Secreted from the intestinal mucosa for polypeptide digestion






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






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






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






49. Produced by the pancreas for fat digestion






50. 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