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 polymers that can be repeatedly softened by heating and hardened by cooling.






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






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






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






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






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






7. Activates tissue factors aka endothelial damage






8. ____ grafts are derived from the other humans.






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






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






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






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






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






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






15. 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.






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






17. This type of feedback creates






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






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






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






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






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






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






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






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






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






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






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






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






30. Mast cells release this






31. Keloid scars form due to disfunction of ____.






32. The two types of white blood cells:






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






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






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






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






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






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






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






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






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






42. Enzyme that really gets the polmerization going!






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






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






45. Drawback of micromaching






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






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






48. 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.






49. Thrombin activates several upstream factors.






50. List two chemical characteristics of polymers: