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






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






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






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






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






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






7. The two types of white blood cells:






8. Cells that don't proliferate (neurons)






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






10. Keloid scars form due to disfunction of ____.






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






12. List two chemical characteristics of polymers:






13. ____ are enzymes responsible for protein degradation.






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






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






16. 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.






17. ______ Molecular weight degrades slower than lower MW






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






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






20. This type of feedback creates






21. Keloid scars forms because disfuntion of






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






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






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






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






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






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






28. Cells that proliferate rapidly (fibroblasts)






29. 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.






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






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






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






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






34. Enzyme that really gets the polmerization going!






35. 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.






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






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






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






39. Drawback of micromaching






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






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






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






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






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






45. _____ establishes a quantitative relationship between measured output values from an instrument and known standards of what is being measured.






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






47. Activates tissue factors aka endothelial damage






48. Mast cells release this






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






50. 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?







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Can you answer 50 questions in 15 minutes?


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