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Test your basic knowledge |
Bio Engineering
Start Test
Study First
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. Condition in which patients can literally bleed to death.
Collagenase/Remodelling
Number of polymers - molecular weight of polymer
Thrombin
Hemophilia
2. This type of feedback creates
Large
negative feedback
Intermolecular bonding - molecular weight
Permanent cells
3. Which of polyermization (condensation/free radical) would you choose to obtain a polymer of high molecular weight?
micromachining
Stable cells
angiogenesis
Free Radical
4. Foreign body giants cells are produced by fusion of ___.
Polydesperity index
Chemotaxis
angiogenesis
Macrophages
5. Cells that don't proliferate (neurons)
Number of polymers - molecular weight of polymer
Allogeneic
Permanent cells
Thrombin
6. Keloid scars forms because disfuntion of
heparin
Stable cells
Collagenase
hypoxin - angiogenesis
7. ____ describes the ability of a device to function appropriately in the presence of blood.
hypoxin - angiogenesis
Allogeneic
Large
Hemocompatibility
8. Keloid scars form due to disfunction of ____.
Extrusion
Amide
Collagenase/Remodelling
Phagocytosis
9. The two types of white blood cells:
heparin
neutrophils - macrophages
hypoxin - angiogenesis
Damage to cell membranes
10. The glass transition temperature of a poymer at which a polymer transforms from a ____ state to a ___ state.
glassy to rubbery
stress
Proteases
Negative Feedback
11. A condensation polymerization results with an ester bond between two reactants and this comes off as a result
Water
Thrombin
Regeneration/Repair
Chemotaxis
12. Type of fiber drawing that controls details of a polymer by etching on a microscopic level; thus - controlling mechanical properties as well
Collagenase/Remodelling
Permanent cells
Allogeneic
micromachining
13. High conductivity - isotropic - crystalline
Plastic
Metals
hypoxin - angiogenesis
scars
14. ____ grafts are derived from the other humans.
micromachining
labile cells
Endothelial cells
Allogeneic
15. Classify the following polymers into appropriate families based on their bond structure i.e. the polymer is an example of poly ____.
Collagenase/Remodelling
Calibration
Amide
alloys - passivation
16. The fatigue limit is value of applied stress below which a material will not fail no matter the number of ____ applied.
cycles
Intermolecular bonding - molecular weight
Plasticizers
Collagenase
17. 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.
autologous
low
Hemocompatibility
heparin
18. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.
heparin
Polydesperity index
phagocytosis
standards of known properties
19. Cells that proliferate rapidly (fibroblasts)
Thrombin
labile cells
phagocytosis
micromachining
20. The process of calibration establishes a quantitative relationship between ____ __ ___ _____ and the direct output of the intstrument (for example time/volume in GPC).
standards of known properties
autologous
alloys - passivation
Permanent cells
21. 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.
Higher
Large
Allogeneic
Stable cells
22. Deformation that cannot be recovered once the load is removed from the material is ____ deformation.
Damage to cell membranes
fibrinogen - factor XIII
Plastic
Metals
23. Is directed cell migration in response to a concentration gradient of soluble molecules.
Mast - Collagen
Lower
Chemotaxis
autologous
24. Vascular endothelial growth factor is produced in response to ___ and stimulates ___.
Proteases
macrophages - proliferation
hypoxin - angiogenesis
Higher
25. Mast cells release this
Collagenase
heparin
Polymers - cross linking of polymers
Thrombin
26. A ____ implant is designed to elicit specific - intended to host responses.
Collagenase
labile cells
Plastic
Bioactive
27. Cells that proliferate slowly over time (aka liver)
Have to be in a clean room free of dust and biocontamination - expensive
Stable cells
Stress
photoactive polymers
28. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.
Negative Feedback
mast cells
Plasticizers
in cytoplasm
29. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.
Polymers - cross linking of polymers
negative feedback
fibrinogen - factor XIII
Protein Absorption
30. ____ are enzymes responsible for protein degradation.
Higher
Free Radical
Proteases
Plastic
31. The trigger for activation of enzymes (anything but endothelial cells!)
Protein Absorption
Mast - Collagen
binding
Thrombin
32. _____ establishes a quantitative relationship between measured output values from an instrument and known standards of what is being measured.
Proteases
Calibration
in cytoplasm
mast cells
33. Rather than randomly moving - moves in a directed cell migration manner for specific functions.
micromachining
Compression molding
Damage to cell membranes
chemotaxis
34. List two chemical characteristics of polymers:
Enzyme cascade
Hemophilia
Intermolecular bonding - molecular weight
in cytoplasm
35. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
free radical
micromachining
angiogenesis
Phagocytosis
36. 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?
Compression molding
Negative Feedback
Have to be in a clean room free of dust and biocontamination - expensive
Plasticizers
37. What types of wound healing results from injury with inflammation?
Enzyme cascade
Regeneration/Repair
Number of polymers - molecular weight of polymer
fibrinogen - factor XIII
38. The calculation of a polymer's molecular weight (weight average and number number average) is based upon values for ____ and ___.
Intermolecular bonding - molecular weight
in cytoplasm
standards of known properties
Number of polymers - molecular weight of polymer
39. ____- are polymers that can be repeatedly softened by heating and hardened by cooling.
Mast - Collagen
Stable cells
low
Thermoplastics
40. ____ is a measurement that characterizes the breadth of the distribution of a polymer's molecular weight.
Polydesperity index
Regeneration/Repair
Intermolecular bonding - molecular weight
micromachining
41. Process that makes long fibers (fiber drawing) by forcing a fluid through an oriface.
Bioactive
glassy to rubbery
photoactive polymers
Extrusion
42. Disfunction of _____ (cells) producing collagenase during the _____ phase of wound healing may form Keloid scars.
cycles
Have to be in a clean room free of dust and biocontamination - expensive
macrophages - proliferation
Negative Feedback
43. Resulting from the build up of too much collagen at the surface of injury during the granulation tissue stage of proliferation
Chemotaxis
scars
Enzyme cascade
Allogeneic
44. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.
Positive Feedback
glassy to rubbery
Polymers - cross linking of polymers
low
45. Polyethylene oxide grafting to biomaterials was developed to prevent coagulation by interfering with/preventing ___ ___.
binding
Protein Absorption
Allogeneic
Endothelial cells
46. Where are the tissue factors found when they're inactivated
in cytoplasm
Regeneration/Repair
mast cells
Damage to cell membranes
47. Damaged cells at the site of injury (mast cells) release ___ (glycosaminoglycan).
Damage to cell membranes
heparin
Stable cells
Bioactive
48. ______ Molecular weight degrades slower than lower MW
standards of known properties
Higher
glassy to rubbery
autologous
49. Thrombin activates several upstream factors.
Positive Feedback
Collagenase
free radical
Metals
50. A molecular pathway in which the product of each reaction catalyzes the subsequent reaction.
Water
Lower
Protein Absorption
Enzyme cascade