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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. 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.






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






3. Thrombin activates several upstream factors.






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






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






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






7. Cells that don't proliferate (neurons)






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






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






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






11. Keloid scars form due to disfunction of ____.






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






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






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






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






16. ____ are enzymes responsible for protein degradation.






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






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






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






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






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






22. 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?






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






24. ____ grafts are derived from the other humans.






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






26. List two chemical characteristics of polymers:






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






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






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. ______ Molecular weight degrades slower than lower MW






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






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






33. Keloid scars forms because disfuntion of






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






35. Mast cells release this






36. High conductivity - isotropic - crystalline






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






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






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






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






41. Cells that proliferate rapidly (fibroblasts)






42. 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.






43. Activates tissue factors aka endothelial damage






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






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






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






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






48. Drawback of micromaching






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






50. Enzyme that really gets the polmerization going!







Sorry!:) No result found.

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