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. Keloid scars forms because disfuntion of






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






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






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






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






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






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






8. 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.






9. Enzyme that really gets the polmerization going!






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






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






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






13. Cells that proliferate rapidly (fibroblasts)






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






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






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






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






18. 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?






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






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






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






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






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






24. Activates tissue factors aka endothelial damage






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






26. ______ Molecular weight degrades slower than lower MW






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






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






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






30. ____ grafts are derived from the other humans.






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






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






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






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






35. Drawback of micromaching






36. List two chemical characteristics of polymers:






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






38. Higher Molecular weight degrades slower than ____ MW






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






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






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






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






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






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






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






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






47. What type of materials are used for photolithography? (substrate is a silicon wafer - built up material is some _____ ____ )






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






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






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