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






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






3. Keloid scars forms because disfuntion of






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






5. ______ Molecular weight degrades slower than lower MW






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






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






8. High conductivity - isotropic - crystalline






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






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






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






12. Drawback of micromaching






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






14. The two types of white blood cells:






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






16. 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.






17. ____ grafts are derived from the other humans.






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






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






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






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






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






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






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






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






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






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






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






29. Cells that proliferate rapidly (fibroblasts)






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






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






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






33. 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.






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






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






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






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






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






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






40. Thrombin activates several upstream factors.






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






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






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






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






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






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






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






48. Keloid scars form due to disfunction of ____.






49. 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?






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