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. Mast cells release this






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






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






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






5. Activates tissue factors aka endothelial damage






6. Drawback of micromaching






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






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






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






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






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






12. Thrombin activates several upstream factors.






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






14. Keloid scars form due to disfunction of ____.






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






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






17. Enzyme that really gets the polmerization going!






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






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






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






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






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






23. 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.






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






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






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






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






28. 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.






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






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






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






32. List two chemical characteristics of polymers:






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






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






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






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






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






38. The two types of white blood cells:






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






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






41. ____ grafts are derived from the other humans.






42. ______ Molecular weight degrades slower than lower MW






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






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






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






46. ____ are enzymes responsible for protein degradation.






47. Keloid scars forms because disfuntion of






48. 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?






49. 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.






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