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






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






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






4. Place to store food






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






6. Secretes two substances: intrinsic factor and hydrchloric acid






7. Line the gastrovascular cavity secrete enzymes into the cavity






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






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






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






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






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






13. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine






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






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






16. Where mechanical and chemical digestion of food begins






17. Improve food digestion






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






19. 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






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






21. Unable to synthesize their own nutrients






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






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






24. Produced by the pancreas for fat digestion






25. Converted to pepsin and synthesized by chief cells






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






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






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






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






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






31. To grind the food






32. Lacking lactase enzyme






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






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






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






36. Secreted from the intestinal mucosa for polypeptide digestion






37. Produced by the pancreas for protein digestion






38. Produces enzymes such as amylase - trypsin - lipase






39. Vessels of the lymphatic system






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






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






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






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






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






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






46. Enzyme in saliva which hydrolyzes starch to maltose






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






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






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






50. Uses intracellular and extracellular digestion