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






2. High conductivity - isotropic - crystalline






3. Keloid scars forms because disfuntion of






4. Mast cells release this






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






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






7. The two types of white blood cells:






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






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






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






11. ____ grafts are derived from the other humans.






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






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






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






15. 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.






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






17. Thrombin activates several upstream factors.






18. Enzyme that really gets the polmerization going!






19. 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.






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






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






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






23. List two chemical characteristics of polymers:






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






25. This type of feedback creates






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






27. Drawback of micromaching






28. Cells that proliferate rapidly (fibroblasts)






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






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






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






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






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






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






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






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






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






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






39. 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.






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






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






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






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






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






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






46. 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?






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






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






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






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