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






2. ______ Molecular weight degrades slower than lower MW






3. ____ grafts are derived from the other humans.






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






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






6. Higher Molecular weight degrades slower than ____ MW






7. Keloid scars form due to disfunction of ____.






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






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






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






11. Mast cells release this






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






13. List two chemical characteristics of polymers:






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






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






16. Keloid scars forms because disfuntion of






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






18. Enzyme that really gets the polmerization going!






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






20. ____ are enzymes responsible for protein degradation.






21. Drawback of micromaching






22. This type of feedback creates






23. 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.






24. High conductivity - isotropic - crystalline






25. Cells that don't proliferate (neurons)






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






41. Cells that proliferate rapidly (fibroblasts)






42. Thrombin activates several upstream factors.






43. 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.






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






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






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






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






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






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






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







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