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






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






3. Enzyme in saliva which hydrolyzes starch to maltose






4. Secreted from the intestinal mucosa for polypeptide digestion






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






6. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine






7. Secreted from the intestinal mucosa for fat digestion






8. Improve food digestion






9. Vessels of the lymphatic system






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






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






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






13. Place to store food






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






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






16. Produced by the pancreas to digest carbohydrates






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






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






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






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






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






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






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






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






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






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






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






28. To grind the food






29. Produced by the pancreas for protein digestion






30. Secretes two substances: intrinsic factor and hydrchloric acid






31. 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






32. Where mechanical and chemical digestion of food begins






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






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






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






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






37. Produces enzymes such as amylase - trypsin - lipase






38. Line the gastrovascular cavity secrete enzymes into the cavity






39. Biting and chewing action of teeth






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






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






42. 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






43. Lacking lactase enzyme






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






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






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






47. Produced by the pancreas for fat digestion






48. Converted to pepsin and synthesized by chief cells






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






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