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






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






3. This type of feedback creates






4. Mast cells release this






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






6. Activates tissue factors aka endothelial damage






7. 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.






8. Cells that proliferate rapidly (fibroblasts)






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






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






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






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






13. Keloid scars forms because disfuntion of






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






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






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






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






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






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






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






21. The two types of white blood cells:






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






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






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






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






26. ______ Molecular weight degrades slower than lower MW






27. Thrombin activates several upstream factors.






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






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






30. Keloid scars form due to disfunction of ____.






31. ____ grafts are derived from the other humans.






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






33. ____ are enzymes responsible for protein degradation.






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






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






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






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






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






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






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






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






42. 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?






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






44. List two chemical characteristics of polymers:






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






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






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






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






49. 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.






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