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. ______ Molecular weight degrades slower than lower MW






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






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






4. This type of feedback creates






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






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






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






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






9. 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.






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






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






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






13. Cells that proliferate rapidly (fibroblasts)






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






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






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






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






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






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






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






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






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






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






24. Thrombin activates several upstream factors.






25. ____ grafts are derived from the other humans.






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






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






28. Activates tissue factors aka endothelial damage






29. ____ are enzymes responsible for protein degradation.






30. Drawback of micromaching






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






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






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






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






35. 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?






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






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






38. List two chemical characteristics of polymers:






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






40. Keloid scars form due to disfunction of ____.






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






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






43. Enzyme that really gets the polmerization going!






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






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






46. High conductivity - isotropic - crystalline






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






48. The two types of white blood cells:






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






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