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






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






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






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






5. ____ are enzymes responsible for protein degradation.






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






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






8. Enzyme that really gets the polmerization going!






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






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






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






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






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






14. Higher Molecular weight degrades slower than ____ MW






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






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






17. Cells that don't proliferate (neurons)






18. List two chemical characteristics of polymers:






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






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






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






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






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






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






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






26. A ____ implant is designed to elicit specific - intended to host responses.






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






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






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






30. Mast cells release this






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






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






33. 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.






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






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






36. ______ Molecular weight degrades slower than lower MW






37. 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?






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






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






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






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






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






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






44. 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.






45. Keloid scars form due to disfunction of ____.






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






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






48. Keloid scars forms because disfuntion of






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






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