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. Cells that proliferate rapidly (fibroblasts)






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






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






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






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






6. Keloid scars form due to disfunction of ____.






7. 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.






8. This type of feedback creates






9. Mast cells release this






10. High conductivity - isotropic - crystalline






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






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






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






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






15. 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?






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






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






18. Activates tissue factors aka endothelial damage






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






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






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






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






23. List two chemical characteristics of polymers:






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






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






26. Enzyme that really gets the polmerization going!






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






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






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






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






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






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






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






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






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






36. Keloid scars forms because disfuntion of






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






38. ______ Molecular weight degrades slower than lower MW






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






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






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






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






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






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






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






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






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






48. 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.






49. Drawback of micromaching






50. Cells that don't proliferate (neurons)