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






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






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






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






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






6. Cells that don't proliferate (neurons)






7. Keloid scars forms because disfuntion of






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






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






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






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






12. This type of feedback creates






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






14. 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.






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






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






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






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






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






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






21. 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?






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






23. Activates tissue factors aka endothelial damage






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






25. Enzyme that really gets the polmerization going!






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






27. ____ grafts are derived from the other humans.






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






29. ______ Molecular weight degrades slower than lower MW






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






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






32. Keloid scars form due to disfunction of ____.






33. The two types of white blood cells:






34. Cells that proliferate rapidly (fibroblasts)






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






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






37. Deformation that cannot be recovered once the load is removed from the material is ____ deformation.






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






39. 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.






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






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






42. Thrombin activates several upstream factors.






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






44. Mast cells release this






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






46. List two chemical characteristics of polymers:






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






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






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






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