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






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






3. Keloid scars form due to disfunction of ____.






4. Higher Molecular weight degrades slower than ____ MW






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






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






7. 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?






8. 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.






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






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






11. ____ grafts are derived from the other humans.






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






13. Cells that don't proliferate (neurons)






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






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






16. The two types of white blood cells:






17. High conductivity - isotropic - crystalline






18. ______ Molecular weight degrades slower than lower MW






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






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






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






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






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






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






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






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






27. List two chemical characteristics of polymers:






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






29. This type of feedback creates






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






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






32. ____ are enzymes responsible for protein degradation.






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






34. Drawback of micromaching






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






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






37. 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.






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






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






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






41. Cells that proliferate rapidly (fibroblasts)






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






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






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






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






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






47. Activates tissue factors aka endothelial damage






48. Thrombin activates several upstream factors.






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






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