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






2. To grind the food






3. Uses intracellular and extracellular digestion






4. Improve food digestion






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






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






7. Enzyme in saliva which hydrolyzes starch to maltose






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






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






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






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






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






13. Lacking lactase enzyme






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






15. Converted to pepsin and synthesized by chief cells






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






17. Secretes two substances: intrinsic factor and hydrchloric acid






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






19. Where mechanical and chemical digestion of food begins






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






21. Place to store food






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






23. Secreted from the intestinal mucosa for fat digestion






24. Secreted from the intestinal mucosa for polypeptide digestion






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






26. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine






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






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






29. 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






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






31. Produced by the pancreas for protein digestion






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






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






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






35. Unable to synthesize their own nutrients






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






37. Line the gastrovascular cavity secrete enzymes into the cavity






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






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






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






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






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






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






44. Produces enzymes such as amylase - trypsin - lipase






45. 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






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






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






48. Produced by the pancreas for fat digestion






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






50. Vessels of the lymphatic system