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. 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?






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






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






4. Vascular endothelial growth factor is produced in response to ___ and stimulates ___.






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






6. Cardiac bypass surgery in which a vein from a patient's leg is transplanted to the patient's heart is an example of the us of ____ tissue.






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






8. Keloid scars forms because disfuntion of






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






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






11. List two chemical characteristics of polymers:






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






13. ____ are enzymes responsible for protein degradation.






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






15. Type of fiber drawing that controls details of a polymer by etching on a microscopic level; thus - controlling mechanical properties as well






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






17. Keloid scars form due to disfunction of ____.






18. 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.






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






20. ____ is a measurement that characterizes the breadth of the distribution of a polymer's molecular weight.






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






22. Thrombin activates several upstream factors.






23. Classify the following polymers into appropriate families based on their bond structure i.e. the polymer is an example of poly ____.






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






25. 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.






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






27. Mast cells release this






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






29. Resulting from the build up of too much collagen at the surface of injury during the granulation tissue stage of proliferation






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






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






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






33. The process of calibration establishes a quantitative relationship between ____ __ ___ _____ and the direct output of the intstrument (for example time/volume in GPC).






34. High conductivity - isotropic - crystalline






35. Enzyme that really gets the polmerization going!






36. Collagen ____ is responsible for the gradual gain in mechanical properties of wounded tissue between roughly 4 and 52 weeks post- injury.






37. Activates tissue factors aka endothelial damage






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






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






40. Drawback of micromaching






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






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






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






44. ______ Molecular weight degrades slower than lower MW






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






46. ____ grafts are derived from the other humans.






47. Which of polyermization (condensation/free radical) would you choose to obtain a polymer of high molecular weight?






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






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






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