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






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






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






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






6. Secreted from intestinal mucos for digestion of lactose






7. To grind the food






8. Produces enzymes such as amylase - trypsin - lipase






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






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






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






13. Produced by the pancreas for protein digestion






14. Biting and chewing action of teeth






15. Secreted from the intestinal mucosa for polypeptide digestion






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






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






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






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






20. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine






21. Place to store food






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






23. Improve food digestion






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






25. 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






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






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






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






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






30. Produced by the pancreas to digest carbohydrates






31. Converted to pepsin and synthesized by chief cells






32. Unable to synthesize their own nutrients






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






34. Produced by the pancreas for fat digestion






35. Enzyme in saliva which hydrolyzes starch to maltose






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






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






38. 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






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






40. Where mechanical and chemical digestion of food begins






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






42. Secretes two substances: intrinsic factor and hydrchloric acid






43. Uses intracellular and extracellular digestion






44. Lacking lactase enzyme






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






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






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






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






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






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