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






2. Thrombin activates several upstream factors.






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






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






5. Activates tissue factors aka endothelial damage






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






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






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






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






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






11. Drawback of micromaching






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






13. Mast cells release this






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






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






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






17. List two chemical characteristics of polymers:






18. ____ grafts are derived from the other humans.






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






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






21. 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.






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






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






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






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






26. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.






27. Keloid scars forms because disfuntion of






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






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






30. Enzyme that really gets the polmerization going!






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






32. Deformation that cannot be recovered once the load is removed from the material is ____ deformation.






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






34. Keloid scars form due to disfunction of ____.






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






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






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






38. Cells that don't proliferate (neurons)






39. ______ Molecular weight degrades slower than lower MW






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






41. 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?






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






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






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






45. Cells that proliferate rapidly (fibroblasts)






46. This type of feedback creates






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






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






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






50. 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.