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. List two chemical characteristics of polymers:






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






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






4. Enzyme that really gets the polmerization going!






5. Keloid scars forms because disfuntion of






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






7. Drawback of micromaching






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






9. The two types of white blood cells:






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






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






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






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






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






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






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






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






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






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






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






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






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






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






24. Keloid scars form due to disfunction of ____.






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






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






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






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






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






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






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






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






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






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






35. 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.






36. ____ grafts are derived from the other humans.






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






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






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






40. 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?






41. Higher Molecular weight degrades slower than ____ MW






42. Cells that proliferate rapidly (fibroblasts)






43. 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.






44. This type of feedback creates






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






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






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






48. Thrombin activates several upstream factors.






49. Activates tissue factors aka endothelial damage






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