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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. Vessels of the lymphatic system






2. Biting and chewing action of teeth






3. Produces enzymes such as amylase - trypsin - lipase






4. Uses intracellular and extracellular digestion






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






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






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






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






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






10. Converted to pepsin and synthesized by chief cells






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






12. Secreted from the intestinal mucosa for polypeptide digestion






13. To grind the food






14. Produced by the pancreas for fat digestion






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






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






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






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






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






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






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






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






23. Produced by the pancreas to digest carbohydrates






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






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






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






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






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






29. 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






30. Lacking lactase enzyme






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






32. Improve food digestion






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






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






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






38. Enzyme in saliva which hydrolyzes starch to maltose






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






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






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






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






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






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






45. 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






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






47. Unable to synthesize their own nutrients






48. Secretes two substances: intrinsic factor and hydrchloric acid






49. Place to store food






50. Secreted from the intestinal mucosa for fat digestion