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. This type of feedback creates






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






3. The fibrous capsule surrounding a permanent implant is primarily composed of ___ cells and ____ (matrix).






4. Keloid scars forms because disfuntion of






5. A condensation polymerization results with an ester bond between two reactants and this comes off as a result






6. List two chemical characteristics of polymers:






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






8. 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?






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






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






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






12. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.






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






14. 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.






15. ____ grafts are derived from the other humans.






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






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






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






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






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






21. Activates tissue factors aka endothelial damage






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






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






24. ______ Molecular weight degrades slower than lower MW






25. Enzyme that really gets the polmerization going!






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






27. Thrombin activates several upstream factors.






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






29. 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.






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






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






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






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






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






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






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






37. The two types of white blood cells:






38. Cells that proliferate rapidly (fibroblasts)






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






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






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






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






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






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






45. The glass transition temperature of a poymer at which a polymer transforms from a ____ state to a ___ state.






46. Drawback of micromaching






47. Cells that don't proliferate (neurons)






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






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. Mast cells release this