Test your basic knowledge |

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






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






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






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






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






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






7. Where mechanical and chemical digestion of food begins






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






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






10. Secreted from intestinal mucos for digestion of lactose






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






12. To grind the food






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






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






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






16. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine






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






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






19. 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






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






21. Produced by the pancreas for fat digestion






22. Uses intracellular and extracellular digestion






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






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






25. Secreted from the intestinal mucosa for fat digestion






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






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






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






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






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






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






32. Line the gastrovascular cavity secrete enzymes into the cavity






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






34. Produces enzymes such as amylase - trypsin - lipase






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






36. Vessels of the lymphatic system






37. Place to store food






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






39. Converted to pepsin and synthesized by chief cells






40. Improve food digestion






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






42. Lacking lactase enzyme






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






44. Biting and chewing action of teeth






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






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






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






48. Secretes two substances: intrinsic factor and hydrchloric acid






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






50. Secreted from the intestinal mucosa for polypeptide digestion