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Bio Engineering

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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. Addition polymerization is commonly initiated by ___ - atoms that have an unpaired electron.






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






3. Cells that proliferate rapidly (fibroblasts)






4. The two types of white blood cells:






5. Enzyme that really gets the polmerization going!






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






7. ____ are enzymes responsible for protein degradation.






8. 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.






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






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






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






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






13. Mast cells release this






14. Keloid scars form due to disfunction of ____.






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






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






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






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






19. This type of feedback creates






20. ______ Molecular weight degrades slower than lower MW






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






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






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






24. Drawback of micromaching






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






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






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






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






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






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






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






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






33. ____ grafts are derived from the other humans.






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






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






36. Thrombin activates several upstream factors.






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






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






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






40. Keloid scars forms because disfuntion of






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






42. Activates tissue factors aka endothelial damage






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






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






45. 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?






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






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






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






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






50. 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.







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