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






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






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






4. 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.






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






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






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






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






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






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






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






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






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






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






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






16. Activates tissue factors aka endothelial damage






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






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






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






20. 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.






21. ____ grafts are derived from the other humans.






22. 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?






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






24. Drawback of micromaching






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






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






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






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






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






30. This type of feedback creates






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






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






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






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






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






36. List two chemical characteristics of polymers:






37. ____ are enzymes responsible for protein degradation.






38. Mast cells release this






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






40. Cells that proliferate rapidly (fibroblasts)






41. The two types of white blood cells:






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






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






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






45. Enzyme that really gets the polmerization going!






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






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






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






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






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