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






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






3. 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






4. Lacking lactase enzyme






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






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






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






8. Improve food digestion






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






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






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






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






13. Biting and chewing action of teeth






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






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






16. 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






17. Uses intracellular and extracellular digestion






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






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






20. Where mechanical and chemical digestion of food begins






21. Secreted from the intestinal mucosa for polypeptide digestion






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






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






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






25. Secretes two substances: intrinsic factor and hydrchloric acid






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






27. Produces enzymes such as amylase - trypsin - lipase






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






29. Line the gastrovascular cavity secrete enzymes into the cavity






30. Produced by the pancreas for protein digestion






31. To grind the food






32. Produced by the pancreas to digest carbohydrates






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






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






35. Secreted from the intestinal mucosa for fat digestion






36. Place to store food






37. Unable to synthesize their own nutrients






38. Secreted from intestinal mucos for digestion of lactose






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






40. Produced by the pancreas for fat digestion






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






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






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






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






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






46. Enzyme in saliva which hydrolyzes starch to maltose






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






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






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






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