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. Higher Molecular weight degrades slower than ____ MW






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






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






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






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






6. Activates tissue factors aka endothelial damage






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






8. List two chemical characteristics of polymers:






9. 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?






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






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






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






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






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






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






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






17. Keloid scars form due to disfunction of ____.






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






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






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






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






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






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






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






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






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






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






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






29. 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.






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






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






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






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






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






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






36. 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.






37. Cells that proliferate rapidly (fibroblasts)






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






39. Drawback of micromaching






40. Cells that don't proliferate (neurons)






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






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






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






44. This type of feedback creates






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






46. Enzyme that really gets the polmerization going!






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






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






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






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