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. Keloid scars forms because disfuntion of






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






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






4. ______ Molecular weight degrades slower than lower MW






5. High conductivity - isotropic - crystalline






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






7. Keloid scars form due to disfunction of ____.






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






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






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






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






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






13. Cells that proliferate rapidly (fibroblasts)






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






15. ____ are enzymes responsible for protein degradation.






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






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






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






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






20. Enzyme that really gets the polmerization going!






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






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






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






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






25. The two types of white blood cells:






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






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






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






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






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






31. Activates tissue factors aka endothelial damage






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






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






34. Mast cells release this






35. Cells that don't proliferate (neurons)






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






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






38. Thrombin activates several upstream factors.






39. ____ grafts are derived from the other humans.






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






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






42. 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.






43. List two chemical characteristics of polymers:






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






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






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






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






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






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






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