Test your basic knowledge |

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






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






3. 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






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






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






6. Place to store food






7. Line the gastrovascular cavity secrete enzymes into the cavity






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






9. Secretes two substances: intrinsic factor and hydrchloric acid






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






11. Secreted from intestinal mucos for digestion of lactose






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






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






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






15. 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






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






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






18. Secreted from the intestinal mucosa for polypeptide digestion






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






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






21. Produces enzymes such as amylase - trypsin - lipase






22. Lacking lactase enzyme






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






24. Vessels of the lymphatic system






25. Where mechanical and chemical digestion of food begins






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






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






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






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






30. Unable to synthesize their own nutrients






31. Produced by the pancreas for protein digestion






32. Enzyme in saliva which hydrolyzes starch to maltose






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






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






35. 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






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






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






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






39. To grind the food






40. Uses intracellular and extracellular digestion






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






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






43. Secreted from the intestinal mucosa for fat digestion






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






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






46. Improve food digestion






47. Converted to pepsin and synthesized by chief cells






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






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






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