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






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






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






4. Keloid scars form due to disfunction of ____.






5. Mast cells release this






6. Cells that don't proliferate (neurons)






7. 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?






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






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






10. Activates tissue factors aka endothelial damage






11. 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.






12. Cells that proliferate rapidly (fibroblasts)






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






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






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






16. List two chemical characteristics of polymers:






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






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






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






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






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






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






23. High conductivity - isotropic - crystalline






24. Higher Molecular weight degrades slower than ____ MW






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






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






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






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






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






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






31. ______ Molecular weight degrades slower than lower MW






32. The two types of white blood cells:






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






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






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






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






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






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






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






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






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






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






43. ____ grafts are derived from the other humans.






44. Keloid scars forms because disfuntion of






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






46. This type of feedback creates






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






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






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






50. 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.






Can you answer 50 questions in 15 minutes?



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