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






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






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






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






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






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






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






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






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






10. ____ grafts are derived from the other humans.






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






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






13. Drawback of micromaching






14. 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?






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






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






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






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






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






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






21. The fatigue limit is value of applied stress below which a material will not fail no matter the number of ____ applied.






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






23. Thrombin activates several upstream factors.






24. Enzyme that really gets the polmerization going!






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






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






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






28. 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.






29. Cells that proliferate rapidly (fibroblasts)






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






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






32. Keloid scars forms because disfuntion of






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






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






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






36. 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.






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






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






39. Higher Molecular weight degrades slower than ____ MW






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






41. Keloid scars form due to disfunction of ____.






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






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






45. Activates tissue factors aka endothelial damage






46. This type of feedback creates






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






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






49. List two chemical characteristics of polymers:






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