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






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






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






4. Drawback of micromaching






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






6. ____ are enzymes responsible for protein degradation.






7. 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.






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






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






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






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






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






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






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






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






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






17. 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.






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






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






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






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






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






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






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






25. This type of feedback creates






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






27. 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.






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






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






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






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






32. The two types of white blood cells:






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






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






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






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






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






38. Cells that proliferate rapidly (fibroblasts)






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






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






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






42. Enzyme that really gets the polmerization going!






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






44. ______ Molecular weight degrades slower than lower MW






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






46. Activates tissue factors aka endothelial damage






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






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






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






50. 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?