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






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






3. Produced by the pancreas to digest carbohydrates






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






5. Place to store food






6. Unable to synthesize their own nutrients






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






8. Improve food digestion






9. 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






10. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine






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






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






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






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






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






16. Produces enzymes such as amylase - trypsin - lipase






17. Line the gastrovascular cavity secrete enzymes into the cavity






18. Biting and chewing action of teeth






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






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






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






22. To grind the food






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






24. Produced by the pancreas for fat digestion






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






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






27. Converted to pepsin and synthesized by chief cells






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






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






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






31. Lacking lactase enzyme






32. Secreted from the intestinal mucosa for fat digestion






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






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






35. Produced by the pancreas for protein digestion






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






37. Enzyme in saliva which hydrolyzes starch to maltose






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






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






40. Secretes two substances: intrinsic factor and hydrchloric acid






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






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






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






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






45. Where mechanical and chemical digestion of food begins






46. Vessels of the lymphatic system






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






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






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






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