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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. Where are the tissue factors found when they're inactivated
labile cells
Regeneration/Repair
in cytoplasm
photoactive polymers
2. Enzyme that really gets the polmerization going!
low
negative feedback
Thrombin
cross - linking
3. ____ describes the ability of a device to function appropriately in the presence of blood.
heparin
Hemocompatibility
Heparin
Enzyme cascade
4. 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.
Intermolecular bonding - molecular weight
Large
Phagocytosis
alloys - passivation
5. Collagen ____ is responsible for the gradual gain in mechanical properties of wounded tissue between roughly 4 and 52 weeks post- injury.
Compression molding
cross - linking
chemotaxis
Thrombin
6. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
Phagocytosis
heparin
Large
Number of polymers - molecular weight of polymer
7. Classify the following polymers into appropriate families based on their bond structure i.e. the polymer is an example of poly ____.
low
phagocytosis
Thrombin
Amide
8. No healing of damage neurons is the result of ____ cells that are not able to ____.
Protein Absorption
free radical
Permanent - replicate
hypoxin - angiogenesis
9. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.
labile cells
mast cells
hypoxin - angiogenesis
cross - linking
10. Drawback of micromaching
Polydesperity index
Have to be in a clean room free of dust and biocontamination - expensive
Thermoplastics
Heparin
11. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.
fibrinogen - factor XIII
Lower
heparin
Proteases
12. A ____ implant is designed to elicit specific - intended to host responses.
Stress
Amide
Bioactive
phagocytosis
13. What types of wound healing results from injury with inflammation?
Regeneration/Repair
labile cells
Amide
Stress
14. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.
Proteases
Negative Feedback
phagocytosis
Chemotaxis
15. 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.
Stress
autologous
heparin
mast cells
16. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.
fibrinogen - factor XIII
Negative Feedback
phagocytosis
low
17. 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?
Metals
Compression molding
Polydesperity index
Regeneration/Repair
18. Activates tissue factors aka endothelial damage
Number of polymers - molecular weight of polymer
Permanent - replicate
Damage to cell membranes
Regeneration/Repair
19. _____ establishes a quantitative relationship between measured output values from an instrument and known standards of what is being measured.
binding
Calibration
Polymers - cross linking of polymers
negative feedback
20. Enzymes (proteins) are not activated only when they are in contact with this type of cells
Endothelial cells
Protein Absorption
Negative Feedback
glassy to rubbery
21. ______ Molecular weight degrades slower than lower MW
Collagenase/Remodelling
Extrusion
Positive Feedback
Higher
22. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.
low
cycles
Mast - Collagen
Polydesperity index
23. The process of calibration establishes a quantitative relationship between ____ __ ___ _____ and the direct output of the intstrument (for example time/volume in GPC).
macrophages - proliferation
standards of known properties
Intermolecular bonding - molecular weight
Stress
24. The fatigue limit is value of applied stress below which a material will not fail no matter the number of ____ applied.
chemotaxis
Thrombin
cycles
alloys - passivation
25. This type of feedback creates
negative feedback
heparin
glassy to rubbery
Stress
26. Rather than randomly moving - moves in a directed cell migration manner for specific functions.
Proteases
chemotaxis
heparin
in cytoplasm
27. Mast cells release this
mast cells
heparin
phagocytosis
micromachining
28. High conductivity - isotropic - crystalline
Damage to cell membranes
alloys - passivation
Intermolecular bonding - molecular weight
Metals
29. Are polymer additives used to lower glass transition temperature temperature.
binding
Heparin
Plasticizers
Permanent cells
30. Resulting from the build up of too much collagen at the surface of injury during the granulation tissue stage of proliferation
macrophages - proliferation
Allogeneic
scars
Have to be in a clean room free of dust and biocontamination - expensive
31. Cells that proliferate slowly over time (aka liver)
Stable cells
glassy to rubbery
alloys - passivation
micromachining
32. Keloid scars forms because disfuntion of
Thrombin
Collagenase
Protein Absorption
Regeneration/Repair
33. Deformation that cannot be recovered once the load is removed from the material is ____ deformation.
Permanent cells
Positive Feedback
Plastic
Lower
34. During granulation stage of proliferation - growth factors that produce this ____(answer)_____ that function in degrading fibrin and replacing it with collagen.
Hemophilia
negative feedback
Proteases
alloys - passivation
35. ____ are enzymes responsible for protein degradation.
stress
Collagenase
Proteases
Thrombin
36. The fibrous capsule surrounding a permanent implant is primarily composed of ___ cells and ____ (matrix).
Have to be in a clean room free of dust and biocontamination - expensive
Collagenase/Remodelling
Mast - Collagen
autologous
37. Disfunction of _____ (cells) producing collagenase during the _____ phase of wound healing may form Keloid scars.
low
Metals
macrophages - proliferation
Thrombin
38. Polyethylene oxide grafting to biomaterials was developed to prevent coagulation by interfering with/preventing ___ ___.
Protein Absorption
Proteases
Mast - Collagen
Positive Feedback
39. The trigger for activation of enzymes (anything but endothelial cells!)
free radical
binding
Bioactive
Negative Feedback
40. Condition in which patients can literally bleed to death.
Plasticizers
neutrophils - macrophages
Higher
Hemophilia
41. A condensation polymerization results with an ester bond between two reactants and this comes off as a result
Compression molding
Collagenase
Water
scars
42. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.
Permanent cells
Higher
Permanent - replicate
stress
43. What type of materials are used for photolithography? (substrate is a silicon wafer - built up material is some _____ ____ )
Proteases
photoactive polymers
Free Radical
hypoxin - angiogenesis
44. Process of producing new blood vessels due to a lack on oxygen and thus inducing VEGF.
angiogenesis
Have to be in a clean room free of dust and biocontamination - expensive
Compression molding
neutrophils - macrophages
45. ____ binds to anti- thrombin III (thrombin inhibitor) and increases its potency 1000- fold.
binding
Polymers - cross linking of polymers
Damage to cell membranes
Heparin
46. ____ grafts are derived from the other humans.
Lower
Allogeneic
Number of polymers - molecular weight of polymer
Proteases
47. This cleaves into fibrinogen which creates fibrin (a sticky enzyme that allows blood to clot)
Permanent cells
Macrophages
Thrombin
Negative Feedback
48. Cells that don't proliferate (neurons)
binding
Permanent cells
Lower
macrophages - proliferation
49. Damaged cells at the site of injury (mast cells) release ___ (glycosaminoglycan).
scars
heparin
Allogeneic
macrophages - proliferation
50. Foreign body giants cells are produced by fusion of ___.
Calibration
Heparin
Macrophages
Plasticizers