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






2. Improve food digestion






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






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






5. Vessels of the lymphatic system






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






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






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






9. Uses intracellular and extracellular digestion






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






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






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






13. Unable to synthesize their own nutrients






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






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






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






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






18. Secreted from the intestinal mucosa for polypeptide digestion






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






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






21. Biting and chewing action of teeth






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






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






24. Secreted from intestinal mucos for digestion of lactose






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






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






27. 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






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






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






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






31. Produces enzymes such as amylase - trypsin - lipase






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






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






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






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






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






37. 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






38. Enzyme in saliva which hydrolyzes starch to maltose






39. Produced by the pancreas for protein digestion






40. To grind the food






41. Secretes two substances: intrinsic factor and hydrchloric acid






42. 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






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






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






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






46. Line the gastrovascular cavity secrete enzymes into the cavity






47. Converted to pepsin and synthesized by chief cells






48. Where mechanical and chemical digestion of food begins






49. Produced by the pancreas for fat digestion






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