Test your basic knowledge |

Bio Engineering

Subject : engineering
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. Mast cells release this






2. Thrombin activates several upstream factors.






3. Process of producing new blood vessels due to a lack on oxygen and thus inducing VEGF.






4. Addition polymerization is commonly initiated by ___ - atoms that have an unpaired electron.






5. Cells that don't proliferate (neurons)






6. This cleaves into fibrinogen which creates fibrin (a sticky enzyme that allows blood to clot)






7. Two things needed in the end product of the creation of a scab






8. Is directed cell migration in response to a concentration gradient of soluble molecules.






9. Disfunction of _____ (cells) producing collagenase during the _____ phase of wound healing may form Keloid scars.






10. Condition in which patients can literally bleed to death.






11. ____- are polymers that can be repeatedly softened by heating and hardened by cooling.






12. During granulation stage of proliferation - growth factors that produce this ____(answer)_____ that function in degrading fibrin and replacing it with collagen.






13. ____ grafts are derived from the other humans.






14. Foreign body giants cells are produced by fusion of ___.






15. You're working on a square polymeric implant of 5cm length and 2mm thick. You've been asked to suggest a precise way to fabricate it - what would you suggest?






16. ____ binds to anti- thrombin III (thrombin inhibitor) and increases its potency 1000- fold.






17. What types of wound healing results from injury with inflammation?






18. A molecular pathway in which the product of each reaction catalyzes the subsequent reaction.






19. Deformation that cannot be recovered once the load is removed from the material is ____ deformation.






20. Process that makes long fibers (fiber drawing) by forcing a fluid through an oriface.






21. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.






22. ____ describes the ability of a device to function appropriately in the presence of blood.






23. ____ are enzymes responsible for protein degradation.






24. Enzymes (proteins) are not activated only when they are in contact with this type of cells






25. Polyethylene oxide grafting to biomaterials was developed to prevent coagulation by interfering with/preventing ___ ___.






26. Keloid scars forms because disfuntion of






27. The trigger for activation of enzymes (anything but endothelial cells!)






28. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.






29. Higher Molecular weight degrades slower than ____ MW






30. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.






31. Enzyme that really gets the polmerization going!






32. List two chemical characteristics of polymers:






33. Damaged cells at the site of injury (mast cells) release ___ (glycosaminoglycan).






34. Are polymer additives used to lower glass transition temperature temperature.






35. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .






36. Essentially all metallic biomaterials are ____ - comprised of two or more metals. One of these metals is selected for its ability to support _____ - the formation of a stable oxide layer that resists further corrosion.






37. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.






38. A ____ implant is designed to elicit specific - intended to host responses.






39. Rather than randomly moving - moves in a directed cell migration manner for specific functions.






40. Cells that proliferate rapidly (fibroblasts)






41. Where are the tissue factors found when they're inactivated






42. Drawback of micromaching






43. ______ Molecular weight degrades slower than lower MW






44. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.






45. Cells that proliferate slowly over time (aka liver)






46. The calculation of a polymer's molecular weight (weight average and number number average) is based upon values for ____ and ___.






47. The fatigue limit is value of applied stress below which a material will not fail no matter the number of ____ applied.






48. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.






49. GPC separates molecules on the basis of size by their passage over a column packed with a porous matrix. ___ molecules pass through the column more quickly.






50. No healing of damage neurons is the result of ____ cells that are not able to ____.