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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. Unable to synthesize their own nutrients






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






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






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. Improve food digestion






7. Enzyme in saliva which hydrolyzes starch to maltose






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






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






10. Produced by the pancreas for fat digestion






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






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






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






14. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine






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






16. Converted to pepsin and synthesized by chief cells






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






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






19. Secreted from the intestinal mucosa for polypeptide digestion






20. Biting and chewing action of teeth






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






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






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






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






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






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






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






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






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






30. Place to store food






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






32. Line the gastrovascular cavity secrete enzymes into the cavity






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






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






35. To grind the food






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






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






38. Secreted from intestinal mucos for digestion of lactose






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






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






41. Uses intracellular and extracellular digestion






42. Produces enzymes such as amylase - trypsin - lipase






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






44. 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






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






46. Lacking lactase enzyme






47. 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






48. Produced by the pancreas to digest carbohydrates






49. Secreted from the intestinal mucosa for fat digestion






50. Where mechanical and chemical digestion of food begins







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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