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






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






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






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






5. List two chemical characteristics of polymers:






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






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






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






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






10. Enzyme that really gets the polmerization going!






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






12. The two types of white blood cells:






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






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






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






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






17. Thrombin activates several upstream factors.






18. Mast cells release this






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






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






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






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






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






24. ____ are enzymes responsible for protein degradation.






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






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






27. High conductivity - isotropic - crystalline






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






29. Cells that proliferate rapidly (fibroblasts)






30. Drawback of micromaching






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






32. 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.






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






34. Higher Molecular weight degrades slower than ____ MW






35. Cells that don't proliferate (neurons)






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






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






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






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






40. Activates tissue factors aka endothelial damage






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






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






43. ______ Molecular weight degrades slower than lower MW






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






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






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






47. This type of feedback creates






48. Keloid scars form due to disfunction of ____.






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






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