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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. 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.






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






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






5. Mast cells release this






6. Drawback of micromaching






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






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






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






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






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






12. ____ grafts are derived from the other humans.






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






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






15. List two chemical characteristics of polymers:






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






17. Cells that don't proliferate (neurons)






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






19. Activates tissue factors aka endothelial damage






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






21. This type of feedback creates






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






23. Thrombin activates several upstream factors.






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






25. 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?






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






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






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






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






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






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






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






33. Keloid scars forms because disfuntion of






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






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






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






37. 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.






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






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






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






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






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






43. Enzyme that really gets the polmerization going!






44. High conductivity - isotropic - crystalline






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






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






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






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






49. Keloid scars form due to disfunction of ____.






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






Can you answer 50 questions in 15 minutes?



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