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






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






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






4. Cells that don't proliferate (neurons)






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






6. Keloid scars forms because disfuntion of






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






8. 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?






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






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






11. List two chemical characteristics of polymers:






12. 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.






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






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






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. This type of feedback creates






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






18. Mast cells release this






19. Activates tissue factors aka endothelial damage






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






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






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






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






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






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






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






27. Drawback of micromaching






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






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






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






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






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






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






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






35. Keloid scars form due to disfunction of ____.






36. ______ Molecular weight degrades slower than lower MW






37. High conductivity - isotropic - crystalline






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






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






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






41. Cells that proliferate rapidly (fibroblasts)






42. ____ are enzymes responsible for protein degradation.






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






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






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






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






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






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






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






50. ____ grafts are derived from the other humans.