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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. Produces enzymes such as amylase - trypsin - lipase






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






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






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






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






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






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






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






9. Produced by the pancreas for protein digestion






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






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






12. Produced by the pancreas to digest carbohydrates






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






14. Where mechanical and chemical digestion of food begins






15. Vessels of the lymphatic system






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






17. Improve food digestion






18. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine






19. Unable to synthesize their own nutrients






20. Produced by the pancreas for fat digestion






21. Biting and chewing action of teeth






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






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






24. 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






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






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






27. Secretes two substances: intrinsic factor and hydrchloric acid






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






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






30. 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






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






32. Secreted from the intestinal mucosa for polypeptide digestion






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






34. 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






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






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






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






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






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






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






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






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






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






44. Place to store food






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






46. Lacking lactase enzyme






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






48. Uses intracellular and extracellular digestion






49. Secreted from intestinal mucos for digestion of lactose






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