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






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






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






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






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






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






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






8. Drawback of micromaching






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






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






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






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






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






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






15. ______ Molecular weight degrades slower than lower MW






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






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






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






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






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






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






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






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






24. List two chemical characteristics of polymers:






25. Activates tissue factors aka endothelial damage






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






27. 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.






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






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






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






31. Cells that proliferate rapidly (fibroblasts)






32. High conductivity - isotropic - crystalline






33. ____ are enzymes responsible for protein degradation.






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






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






36. 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.






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






38. 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?






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






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






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






42. The two types of white blood cells:






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






44. Enzyme that really gets the polmerization going!






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






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






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






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






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






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