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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. 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.






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






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






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






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






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






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






8. Cells that proliferate rapidly (fibroblasts)






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






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






11. 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.






12. Activates tissue factors aka endothelial damage






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






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






15. High conductivity - isotropic - crystalline






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






17. 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?






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






19. ____ grafts are derived from the other humans.






20. 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.






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






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






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






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






25. Enzyme that really gets the polmerization going!






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






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






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






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






30. Cells that don't proliferate (neurons)






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






32. The two types of white blood cells:






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






34. ______ Molecular weight degrades slower than lower MW






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






36. Thrombin activates several upstream factors.






37. Keloid scars form due to disfunction of ____.






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






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






40. ____ are enzymes responsible for protein degradation.






41. This type of feedback creates






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






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






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






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






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






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






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






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






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







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