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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. Secreted from the intestinal mucosa for fat digestion






2. Secreted from the intestinal mucosa for polypeptide digestion






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






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






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






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






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






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






9. Produces enzymes such as amylase - trypsin - lipase






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






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






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






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






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






15. Biting and chewing action of teeth






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






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






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






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






20. Produced by the pancreas for fat digestion






21. To grind the food






22. Vessels of the lymphatic system






23. Converted to pepsin and synthesized by chief cells






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






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






26. 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






27. Secreted from intestinal mucos for digestion of lactose






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






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






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






31. Where mechanical and chemical digestion of food begins






32. Produced by the pancreas to digest carbohydrates






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






34. Uses intracellular and extracellular digestion






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






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






37. Secretes two substances: intrinsic factor and hydrchloric acid






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






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






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






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






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






43. Lacking lactase enzyme






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






45. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine






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






47. Enzyme in saliva which hydrolyzes starch to maltose






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






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






50. 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