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. ____ are enzymes responsible for protein degradation.






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






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






4. Keloid scars forms because disfuntion of






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






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






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






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






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






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






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






12. Activates tissue factors aka endothelial damage






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






14. Cells that proliferate rapidly (fibroblasts)






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






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






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






18. List two chemical characteristics of polymers:






19. Drawback of micromaching






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






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






22. Mast cells release this






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






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






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






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






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






28. This type of feedback creates






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






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






31. 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?






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






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






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






35. ______ Molecular weight degrades slower than lower MW






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






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






38. 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.






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






40. Enzyme that really gets the polmerization going!






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






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






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






44. 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.






45. Higher Molecular weight degrades slower than ____ MW






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






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






48. Keloid scars form due to disfunction of ____.






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






50. High conductivity - isotropic - crystalline