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






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






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






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






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






6. Keloid scars form due to disfunction of ____.






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






8. List two chemical characteristics of polymers:






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






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






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






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






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






14. Thrombin activates several upstream factors.






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






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






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






18. Keloid scars forms because disfuntion of






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






20. Drawback of micromaching






21. 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?






22. ______ Molecular weight degrades slower than lower MW






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






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






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






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






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






28. The two types of white blood cells:






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






30. 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.






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






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






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






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






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






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






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






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






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






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






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






42. Mast cells release this






43. Enzyme that really gets the polmerization going!






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






45. 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.






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






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






48. Cells that don't proliferate (neurons)






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






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