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. Thrombin activates several upstream factors.






2. Cells that proliferate rapidly (fibroblasts)






3. Cells that don't proliferate (neurons)






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






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






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






7. List two chemical characteristics of polymers:






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






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






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






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






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






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






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






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






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






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






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






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






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






21. 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.






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






23. Mast cells release this






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






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






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






27. Higher Molecular weight degrades slower than ____ MW






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






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






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






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






32. 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.






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






34. Keloid scars form due to disfunction of ____.






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






36. Keloid scars forms because disfuntion of






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






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






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






40. Enzyme that really gets the polmerization going!






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






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






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






44. 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.






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






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






47. ____ grafts are derived from the other humans.






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






49. 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?






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