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






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






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






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






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






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






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






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






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






10. 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.






11. Keloid scars form due to disfunction of ____.






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






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






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






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






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






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






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






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






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






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






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






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






24. 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.






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






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






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






28. ____ are enzymes responsible for protein degradation.






29. Activates tissue factors aka endothelial damage






30. This type of feedback creates






31. ____ grafts are derived from the other humans.






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






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






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






35. High conductivity - isotropic - crystalline






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






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






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






39. Thrombin activates several upstream factors.






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






41. 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?






42. ______ Molecular weight degrades slower than lower MW






43. List two chemical characteristics of polymers:






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






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






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






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






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






49. Drawback of micromaching






50. 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.