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






2. Unable to synthesize their own nutrients






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






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






5. Improve food digestion






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






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






8. Produced by the pancreas to digest carbohydrates






9. Converted to pepsin and synthesized by chief cells






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






11. 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






12. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine






13. Vessels of the lymphatic system






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






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






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






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






18. Place to store food






19. Lacking lactase enzyme






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






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






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






23. Secreted from the intestinal mucosa for polypeptide digestion






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






25. To grind the food






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






27. 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






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






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






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






31. Produced by the pancreas for fat digestion






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






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






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






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






36. Where mechanical and chemical digestion of food begins






37. Produces enzymes such as amylase - trypsin - lipase






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






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






40. Biting and chewing action of teeth






41. 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






42. Produced by the pancreas for protein digestion






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






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






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






46. Secreted from the intestinal mucosa for fat digestion






47. Uses intracellular and extracellular digestion






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






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






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