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






2. Higher Molecular weight degrades slower than ____ MW






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






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






5. ____ grafts are derived from the other humans.






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






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






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






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






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






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






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






13. Cells that proliferate rapidly (fibroblasts)






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






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






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






17. 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?






18. 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.






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






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






21. ____ are enzymes responsible for protein degradation.






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






23. Enzyme that really gets the polmerization going!






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






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






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






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






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






29. Keloid scars forms because disfuntion of






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






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






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






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






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






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






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






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






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






39. Cells that don't proliferate (neurons)






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






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






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






43. 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.






44. Drawback of micromaching






45. Mast cells release this






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






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






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






49. High conductivity - isotropic - crystalline






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