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. Mast cells release this






2. Drawback of micromaching






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






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






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






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






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. Cells that proliferate rapidly (fibroblasts)






9. The two types of white blood cells:






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






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






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






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






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






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






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






17. This type of feedback creates






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






19. ____ are enzymes responsible for protein degradation.






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






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






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






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






24. Enzyme that really gets the polmerization going!






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






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






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






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






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






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






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






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






33. Keloid scars form due to disfunction of ____.






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






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






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






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






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






39. 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?






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






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






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






43. Higher Molecular weight degrades slower than ____ MW






44. ______ Molecular weight degrades slower than lower MW






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






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






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






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






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






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