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






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






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






5. This type of feedback creates






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






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






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






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






10. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.






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






12. Keloid scars form due to disfunction of ____.






13. 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.






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






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






16. The two types of white blood cells:






17. Higher Molecular weight degrades slower than ____ MW






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






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






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






21. 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?






22. Mast cells release this






23. Process of producing new blood vessels due to a lack on oxygen and thus inducing VEGF.






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






25. 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.






26. Activates tissue factors aka endothelial damage






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






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






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






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






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






32. Cells that proliferate rapidly (fibroblasts)






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






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






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






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






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






38. Keloid scars forms because disfuntion of






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






40. Thrombin activates several upstream factors.






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






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






43. ______ Molecular weight degrades slower than lower MW






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






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






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






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






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






49. ____ are enzymes responsible for protein degradation.






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