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






2. To grind the food






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






4. Secreted from the intestinal mucosa for polypeptide digestion






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






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






7. Produced by the pancreas for fat digestion






8. Uses intracellular and extracellular digestion






9. Vessels of the lymphatic system






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






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






12. Produces enzymes such as amylase - trypsin - lipase






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






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






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






16. Improve food digestion






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






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






19. Line the gastrovascular cavity secrete enzymes into the cavity






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






21. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine






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






23. Secreted by the stomach that is a protein-hydrloyzing enzyme - and hydrochloric acd - which kills bacteria - dissolves the intercellular 'glue' holding food tissues together - and activates certain proteins






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






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






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






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






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






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






30. Secreted from the intestinal mucosa for fat digestion






31. Secretes two substances: intrinsic factor and hydrchloric acid






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






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






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






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






36. Secreted from intestinal mucos for digestion of lactose






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






38. Biting and chewing action of teeth






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






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






41. Produced by the pancreas for protein digestion






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






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






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






45. Where mechanical and chemical digestion of food begins






46. Converted to pepsin and synthesized by chief cells






47. Enzyme in saliva which hydrolyzes starch to maltose






48. Produced by the pancreas to digest carbohydrates






49. 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






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