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






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






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






4. Unable to synthesize their own nutrients






5. 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






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






7. Improve food digestion






8. Secreted from the intestinal mucosa for fat digestion






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






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






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






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






13. Secreted from intestinal mucos for digestion of lactose






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






15. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine






16. Converted to pepsin and synthesized by chief cells






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






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






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






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






21. Secreted from the intestinal mucosa for polypeptide digestion






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






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






24. Vessels of the lymphatic system






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






26. Line the gastrovascular cavity secrete enzymes into the cavity






27. Secretes two substances: intrinsic factor and hydrchloric acid






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






29. 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






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






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






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






33. Place to store food






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






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






36. Produced by the pancreas for protein digestion






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






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






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






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






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






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






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






44. Enzyme in saliva which hydrolyzes starch to maltose






45. Produced by the pancreas to digest carbohydrates






46. Lacking lactase enzyme






47. Produces enzymes such as amylase - trypsin - lipase






48. Produced by the pancreas for fat digestion






49. 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






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







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