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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. The glass transition temperature of a poymer at which a polymer transforms from a ____ state to a ___ state.
Thrombin
glassy to rubbery
angiogenesis
phagocytosis
2. Damaged cells at the site of injury (mast cells) release ___ (glycosaminoglycan).
heparin
labile cells
low
Water - oxygen - metal
3. Are polymer additives used to lower glass transition temperature temperature.
Phagocytosis
Chemotaxis
Metals
Plasticizers
4. _____ establishes a quantitative relationship between measured output values from an instrument and known standards of what is being measured.
Plasticizers
mast cells
Calibration
alloys - passivation
5. Enzyme that really gets the polmerization going!
Water
Plasticizers
Number of polymers - molecular weight of polymer
Thrombin
6. The fibrous capsule surrounding a permanent implant is primarily composed of ___ cells and ____ (matrix).
Stress
Mast - Collagen
Permanent - replicate
micromachining
7. High conductivity - isotropic - crystalline
photoactive polymers
Metals
Collagenase/Remodelling
Extrusion
8. List two chemical characteristics of polymers:
Bioactive
Macrophages
Intermolecular bonding - molecular weight
Collagenase/Remodelling
9. Two things needed in the end product of the creation of a scab
phagocytosis
Thrombin
Polymers - cross linking of polymers
angiogenesis
10. ____ binds to anti- thrombin III (thrombin inhibitor) and increases its potency 1000- fold.
Large
Negative Feedback
Lower
Heparin
11. A molecular pathway in which the product of each reaction catalyzes the subsequent reaction.
Mast - Collagen
Enzyme cascade
Allogeneic
Heparin
12. Thrombin activates several upstream factors.
Collagenase
Water
Positive Feedback
heparin
13. Drawback of micromaching
Plastic
Protein Absorption
Compression molding
Have to be in a clean room free of dust and biocontamination - expensive
14. Process that makes long fibers (fiber drawing) by forcing a fluid through an oriface.
binding
Higher
phagocytosis
Extrusion
15. Foreign body giants cells are produced by fusion of ___.
Polydesperity index
fibrinogen - factor XIII
Polymers - cross linking of polymers
Macrophages
16. Resulting from the build up of too much collagen at the surface of injury during the granulation tissue stage of proliferation
glassy to rubbery
macrophages - proliferation
scars
low
17. ____ are enzymes responsible for protein degradation.
free radical
labile cells
Proteases
Polydesperity index
18. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.
Permanent cells
stress
Extrusion
Protein Absorption
19. Cells that proliferate slowly over time (aka liver)
labile cells
Allogeneic
Stable cells
heparin
20. The process of calibration establishes a quantitative relationship between ____ __ ___ _____ and the direct output of the intstrument (for example time/volume in GPC).
Hemophilia
heparin
standards of known properties
Water
21. ____ describes the ability of a device to function appropriately in the presence of blood.
macrophages - proliferation
Enzyme cascade
Number of polymers - molecular weight of polymer
Hemocompatibility
22. 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.
Polydesperity index
glassy to rubbery
Negative Feedback
Large
23. Addition polymerization is commonly initiated by ___ - atoms that have an unpaired electron.
chemotaxis
Enzyme cascade
Proteases
free radical
24. A condensation polymerization results with an ester bond between two reactants and this comes off as a result
Water
Thermoplastics
Plastic
Endothelial cells
25. Classify the following polymers into appropriate families based on their bond structure i.e. the polymer is an example of poly ____.
Phagocytosis
angiogenesis
fibrinogen - factor XIII
Amide
26. ____ is a measurement that characterizes the breadth of the distribution of a polymer's molecular weight.
Stable cells
Polydesperity index
phagocytosis
negative feedback
27. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.
Stress
Bioactive
scars
phagocytosis
28. No healing of damage neurons is the result of ____ cells that are not able to ____.
Chemotaxis
Have to be in a clean room free of dust and biocontamination - expensive
labile cells
Permanent - replicate
29. What type of materials are used for photolithography? (substrate is a silicon wafer - built up material is some _____ ____ )
photoactive polymers
Phagocytosis
low
glassy to rubbery
30. This type of feedback creates
Proteases
Compression molding
free radical
negative feedback
31. Enzymes (proteins) are not activated only when they are in contact with this type of cells
Higher
negative feedback
Endothelial cells
alloys - passivation
32. Vascular endothelial growth factor is produced in response to ___ and stimulates ___.
mast cells
hypoxin - angiogenesis
Negative Feedback
fibrinogen - factor XIII
33. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.
Intermolecular bonding - molecular weight
fibrinogen - factor XIII
Chemotaxis
hypoxin - angiogenesis
34. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
Protein Absorption
glassy to rubbery
low
Phagocytosis
35. What types of wound healing results from injury with inflammation?
Macrophages
Extrusion
scars
Regeneration/Repair
36. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.
Negative Feedback
Polydesperity index
Permanent cells
Metals
37. During granulation stage of proliferation - growth factors that produce this ____(answer)_____ that function in degrading fibrin and replacing it with collagen.
Water
Regeneration/Repair
free radical
Proteases
38. 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.
Polydesperity index
Water
photoactive polymers
alloys - passivation
39. Process of producing new blood vessels due to a lack on oxygen and thus inducing VEGF.
mast cells
Thrombin
neutrophils - macrophages
angiogenesis
40. The two types of white blood cells:
Extrusion
neutrophils - macrophages
Regeneration/Repair
Protein Absorption
41. 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
negative feedback
autologous
Regeneration/Repair
42. Is directed cell migration in response to a concentration gradient of soluble molecules.
cross - linking
Water - oxygen - metal
Chemotaxis
heparin
43. Rather than randomly moving - moves in a directed cell migration manner for specific functions.
chemotaxis
Enzyme cascade
Plastic
Permanent - replicate
44. Cells that don't proliferate (neurons)
Phagocytosis
photoactive polymers
chemotaxis
Permanent cells
45. The fatigue limit is value of applied stress below which a material will not fail no matter the number of ____ applied.
stress
cycles
cross - linking
Plasticizers
46. Disfunction of _____ (cells) producing collagenase during the _____ phase of wound healing may form Keloid scars.
macrophages - proliferation
Damage to cell membranes
Endothelial cells
Intermolecular bonding - molecular weight
47. Keloid scars forms because disfuntion of
angiogenesis
Collagenase
Calibration
Allogeneic
48. A ____ implant is designed to elicit specific - intended to host responses.
Bioactive
Hemophilia
chemotaxis
Proteases
49. Deformation that cannot be recovered once the load is removed from the material is ____ deformation.
Plastic
Allogeneic
low
Amide
50. Type of fiber drawing that controls details of a polymer by etching on a microscopic level; thus - controlling mechanical properties as well
Permanent cells
low
micromachining
Plasticizers