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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 fatigue limit is value of applied stress below which a material will not fail no matter the number of ____ applied.
cycles
Polydesperity index
stress
Calibration
2. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.
heparin
Compression molding
phagocytosis
scars
3. A condensation polymerization results with an ester bond between two reactants and this comes off as a result
Water
heparin
Hemophilia
phagocytosis
4. Are polymer additives used to lower glass transition temperature temperature.
Phagocytosis
Plasticizers
Chemotaxis
scars
5. ____ are enzymes responsible for protein degradation.
Collagenase/Remodelling
Phagocytosis
standards of known properties
Proteases
6. ____- are polymers that can be repeatedly softened by heating and hardened by cooling.
macrophages - proliferation
Stress
scars
Thermoplastics
7. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.
Thrombin
Have to be in a clean room free of dust and biocontamination - expensive
stress
Regeneration/Repair
8. Enzyme that really gets the polmerization going!
hypoxin - angiogenesis
Lower
Thrombin
mast cells
9. Deformation that cannot be recovered once the load is removed from the material is ____ deformation.
Hemophilia
neutrophils - macrophages
Plastic
Permanent cells
10. Collagen ____ is responsible for the gradual gain in mechanical properties of wounded tissue between roughly 4 and 52 weeks post- injury.
stress
Calibration
cross - linking
Amide
11. Is directed cell migration in response to a concentration gradient of soluble molecules.
Mast - Collagen
Endothelial cells
angiogenesis
Chemotaxis
12. Cells that proliferate slowly over time (aka liver)
Endothelial cells
Stable cells
phagocytosis
glassy to rubbery
13. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.
Large
autologous
Negative Feedback
angiogenesis
14. Higher Molecular weight degrades slower than ____ MW
angiogenesis
photoactive polymers
Lower
autologous
15. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.
fibrinogen - factor XIII
Stable cells
Heparin
Compression molding
16. The glass transition temperature of a poymer at which a polymer transforms from a ____ state to a ___ state.
glassy to rubbery
Higher
cycles
micromachining
17. Cells that don't proliferate (neurons)
Permanent cells
Mast - Collagen
Free Radical
Lower
18. List two chemical characteristics of polymers:
Thrombin
Intermolecular bonding - molecular weight
Collagenase/Remodelling
Phagocytosis
19. ____ describes the ability of a device to function appropriately in the presence of blood.
Hemocompatibility
Thermoplastics
Allogeneic
Free Radical
20. Which of polyermization (condensation/free radical) would you choose to obtain a polymer of high molecular weight?
Permanent cells
cycles
heparin
Free Radical
21. The calculation of a polymer's molecular weight (weight average and number number average) is based upon values for ____ and ___.
Collagenase/Remodelling
neutrophils - macrophages
Number of polymers - molecular weight of polymer
Large
22. Rather than randomly moving - moves in a directed cell migration manner for specific functions.
cycles
in cytoplasm
binding
chemotaxis
23. Polyethylene oxide grafting to biomaterials was developed to prevent coagulation by interfering with/preventing ___ ___.
Protein Absorption
Thermoplastics
chemotaxis
heparin
24. Two things needed in the end product of the creation of a scab
Regeneration/Repair
Polymers - cross linking of polymers
chemotaxis
Stress
25. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.
in cytoplasm
Intermolecular bonding - molecular weight
Enzyme cascade
low
26. A ____ implant is designed to elicit specific - intended to host responses.
Calibration
Extrusion
Bioactive
Phagocytosis
27. A molecular pathway in which the product of each reaction catalyzes the subsequent reaction.
Negative Feedback
Hemocompatibility
Water - oxygen - metal
Enzyme cascade
28. Type of fiber drawing that controls details of a polymer by etching on a microscopic level; thus - controlling mechanical properties as well
micromachining
Macrophages
Number of polymers - molecular weight of polymer
Plasticizers
29. Condition in which patients can literally bleed to death.
Hemophilia
Extrusion
Higher
Compression molding
30. Mast cells release this
autologous
heparin
fibrinogen - factor XIII
micromachining
31. Classify the following polymers into appropriate families based on their bond structure i.e. the polymer is an example of poly ____.
Chemotaxis
Amide
free radical
Intermolecular bonding - molecular weight
32. Where are the tissue factors found when they're inactivated
Hemophilia
Hemocompatibility
in cytoplasm
negative feedback
33. 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.
Stable cells
binding
alloys - passivation
Regeneration/Repair
34. ____ binds to anti- thrombin III (thrombin inhibitor) and increases its potency 1000- fold.
phagocytosis
Heparin
Stable cells
Thrombin
35. What type of materials are used for photolithography? (substrate is a silicon wafer - built up material is some _____ ____ )
Free Radical
free radical
Number of polymers - molecular weight of polymer
photoactive polymers
36. ______ Molecular weight degrades slower than lower MW
Thermoplastics
Higher
Stable cells
fibrinogen - factor XIII
37. 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?
Regeneration/Repair
Number of polymers - molecular weight of polymer
Have to be in a clean room free of dust and biocontamination - expensive
Compression molding
38. Addition polymerization is commonly initiated by ___ - atoms that have an unpaired electron.
chemotaxis
free radical
Water - oxygen - metal
Plasticizers
39. Enzymes (proteins) are not activated only when they are in contact with this type of cells
Mast - Collagen
Endothelial cells
stress
scars
40. This cleaves into fibrinogen which creates fibrin (a sticky enzyme that allows blood to clot)
Thrombin
Collagenase
standards of known properties
binding
41. During granulation stage of proliferation - growth factors that produce this ____(answer)_____ that function in degrading fibrin and replacing it with collagen.
scars
Higher
Thermoplastics
Proteases
42. What types of wound healing results from injury with inflammation?
glassy to rubbery
Regeneration/Repair
Water
neutrophils - macrophages
43. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.
heparin
angiogenesis
Plastic
mast cells
44. 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.
Negative Feedback
phagocytosis
autologous
Extrusion
45. Keloid scars form due to disfunction of ____.
Proteases
Plastic
Phagocytosis
Collagenase/Remodelling
46. Process that makes long fibers (fiber drawing) by forcing a fluid through an oriface.
hypoxin - angiogenesis
Mast - Collagen
phagocytosis
Extrusion
47. No healing of damage neurons is the result of ____ cells that are not able to ____.
chemotaxis
Permanent - replicate
Stable cells
Proteases
48. Keloid scars forms because disfuntion of
Enzyme cascade
Have to be in a clean room free of dust and biocontamination - expensive
Collagenase
Mast - Collagen
49. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
Proteases
heparin
Macrophages
Phagocytosis
50. ____ is a measurement that characterizes the breadth of the distribution of a polymer's molecular weight.
negative feedback
Collagenase
Endothelial cells
Polydesperity index