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






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






3. Secretes two substances: intrinsic factor and hydrchloric acid






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






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






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






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






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






9. Line the gastrovascular cavity secrete enzymes into the cavity






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






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






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






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






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






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






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






17. Secreted from intestinal mucos for digestion of lactose






18. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine






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






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






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






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






23. 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






24. Enzyme in saliva which hydrolyzes starch to maltose






25. Vessels of the lymphatic system






26. Produces enzymes such as amylase - trypsin - lipase






27. Produced by the pancreas for fat digestion






28. Produced by the pancreas to digest carbohydrates






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






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






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






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






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






34. Converted to pepsin and synthesized by chief cells






35. Uses intracellular and extracellular digestion






36. Lacking lactase enzyme






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






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






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






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






41. Secreted from the intestinal mucosa for fat digestion






42. Improve food digestion






43. Unable to synthesize their own nutrients






44. Where mechanical and chemical digestion of food begins






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






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






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






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






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






50. 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







Sorry!:) No result found.

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