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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. Disfunction of _____ (cells) producing collagenase during the _____ phase of wound healing may form Keloid scars.
cross - linking
macrophages - proliferation
Extrusion
phagocytosis
2. Are polymer additives used to lower glass transition temperature temperature.
Plasticizers
Plastic
Extrusion
Number of polymers - molecular weight of polymer
3. The fibrous capsule surrounding a permanent implant is primarily composed of ___ cells and ____ (matrix).
Intermolecular bonding - molecular weight
Mast - Collagen
Thrombin
Hemocompatibility
4. 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.
Macrophages
autologous
Compression molding
stress
5. ______ Molecular weight degrades slower than lower MW
Higher
micromachining
Mast - Collagen
Macrophages
6. Classify the following polymers into appropriate families based on their bond structure i.e. the polymer is an example of poly ____.
Amide
Bioactive
Extrusion
Collagenase
7. Collagen ____ is responsible for the gradual gain in mechanical properties of wounded tissue between roughly 4 and 52 weeks post- injury.
Proteases
Water
Metals
cross - linking
8. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
Allogeneic
Chemotaxis
Permanent cells
Water - oxygen - metal
9. Cells that proliferate rapidly (fibroblasts)
alloys - passivation
Thermoplastics
macrophages - proliferation
labile cells
10. 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.
Water - oxygen - metal
Large
cross - linking
Thermoplastics
11. Resulting from the build up of too much collagen at the surface of injury during the granulation tissue stage of proliferation
Endothelial cells
chemotaxis
scars
Positive Feedback
12. ____ describes the ability of a device to function appropriately in the presence of blood.
heparin
Hemophilia
Hemocompatibility
Water - oxygen - metal
13. High conductivity - isotropic - crystalline
Plastic
Free Radical
Metals
photoactive polymers
14. Process of producing new blood vessels due to a lack on oxygen and thus inducing VEGF.
Bioactive
angiogenesis
fibrinogen - factor XIII
Proteases
15. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.
autologous
low
standards of known properties
Calibration
16. Vascular endothelial growth factor is produced in response to ___ and stimulates ___.
autologous
hypoxin - angiogenesis
Stress
Polymers - cross linking of polymers
17. Keloid scars forms because disfuntion of
Compression molding
Collagenase
Phagocytosis
photoactive polymers
18. The calculation of a polymer's molecular weight (weight average and number number average) is based upon values for ____ and ___.
hypoxin - angiogenesis
Water
Plasticizers
Number of polymers - molecular weight of polymer
19. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.
mast cells
low
Negative Feedback
heparin
20. A ____ implant is designed to elicit specific - intended to host responses.
Stress
Polydesperity index
Bioactive
free radical
21. Deformation that cannot be recovered once the load is removed from the material is ____ deformation.
Calibration
Macrophages
glassy to rubbery
Plastic
22. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
Plasticizers
Phagocytosis
Permanent - replicate
Polydesperity index
23. Cells that proliferate slowly over time (aka liver)
Water - oxygen - metal
Higher
Hemophilia
Stable cells
24. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.
Free Radical
glassy to rubbery
mast cells
stress
25. The fatigue limit is value of applied stress below which a material will not fail no matter the number of ____ applied.
Intermolecular bonding - molecular weight
Proteases
stress
cycles
26. What type of materials are used for photolithography? (substrate is a silicon wafer - built up material is some _____ ____ )
hypoxin - angiogenesis
photoactive polymers
Bioactive
low
27. ____- are polymers that can be repeatedly softened by heating and hardened by cooling.
Compression molding
Thermoplastics
autologous
low
28. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.
Higher
Lower
Negative Feedback
hypoxin - angiogenesis
29. Two things needed in the end product of the creation of a scab
Polymers - cross linking of polymers
Amide
macrophages - proliferation
cross - linking
30. _____ establishes a quantitative relationship between measured output values from an instrument and known standards of what is being measured.
Bioactive
chemotaxis
Free Radical
Calibration
31. Higher Molecular weight degrades slower than ____ MW
phagocytosis
Stress
Lower
Hemophilia
32. During granulation stage of proliferation - growth factors that produce this ____(answer)_____ that function in degrading fibrin and replacing it with collagen.
Proteases
free radical
Heparin
Extrusion
33. List two chemical characteristics of polymers:
Stress
Intermolecular bonding - molecular weight
labile cells
Compression molding
34. The two types of white blood cells:
Stress
Compression molding
neutrophils - macrophages
free radical
35. No healing of damage neurons is the result of ____ cells that are not able to ____.
labile cells
Permanent - replicate
Endothelial cells
macrophages - proliferation
36. This cleaves into fibrinogen which creates fibrin (a sticky enzyme that allows blood to clot)
fibrinogen - factor XIII
Thrombin
photoactive polymers
Macrophages
37. Damaged cells at the site of injury (mast cells) release ___ (glycosaminoglycan).
heparin
Metals
hypoxin - angiogenesis
Intermolecular bonding - molecular weight
38. A molecular pathway in which the product of each reaction catalyzes the subsequent reaction.
Metals
glassy to rubbery
Enzyme cascade
hypoxin - angiogenesis
39. ____ grafts are derived from the other humans.
Allogeneic
Collagenase
Calibration
heparin
40. ____ binds to anti- thrombin III (thrombin inhibitor) and increases its potency 1000- fold.
Heparin
low
angiogenesis
Plasticizers
41. Foreign body giants cells are produced by fusion of ___.
stress
Macrophages
Permanent - replicate
Proteases
42. Mast cells release this
chemotaxis
Metals
heparin
stress
43. Essentially all metallic biomaterials are ____ - comprised of two or more metals. One of these metals is selected for its ability to support _____ - the formation of a stable oxide layer that resists further corrosion.
alloys - passivation
Positive Feedback
glassy to rubbery
Enzyme cascade
44. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.
fibrinogen - factor XIII
Hemocompatibility
autologous
Enzyme cascade
45. ____ is a measurement that characterizes the breadth of the distribution of a polymer's molecular weight.
free radical
Positive Feedback
Polydesperity index
binding
46. Keloid scars form due to disfunction of ____.
Collagenase
alloys - passivation
Compression molding
Collagenase/Remodelling
47. The glass transition temperature of a poymer at which a polymer transforms from a ____ state to a ___ state.
Positive Feedback
glassy to rubbery
photoactive polymers
Thrombin
48. The process of calibration establishes a quantitative relationship between ____ __ ___ _____ and the direct output of the intstrument (for example time/volume in GPC).
Protein Absorption
Regeneration/Repair
standards of known properties
glassy to rubbery
49. Addition polymerization is commonly initiated by ___ - atoms that have an unpaired electron.
Plastic
labile cells
Endothelial cells
free radical
50. This type of feedback creates
Metals
Amide
negative feedback
Protein Absorption