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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. Two things needed in the end product of the creation of a scab
Collagenase/Remodelling
Polymers - cross linking of polymers
autologous
cross - linking
2. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
free radical
cross - linking
Water - oxygen - metal
Number of polymers - molecular weight of polymer
3. This cleaves into fibrinogen which creates fibrin (a sticky enzyme that allows blood to clot)
Mast - Collagen
Thrombin
Thermoplastics
Protein Absorption
4. Classify the following polymers into appropriate families based on their bond structure i.e. the polymer is an example of poly ____.
Permanent - replicate
Lower
Amide
Intermolecular bonding - molecular weight
5. 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
heparin
mast cells
macrophages - proliferation
6. 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
Permanent - replicate
cross - linking
Mast - Collagen
7. The calculation of a polymer's molecular weight (weight average and number number average) is based upon values for ____ and ___.
Number of polymers - molecular weight of polymer
chemotaxis
hypoxin - angiogenesis
glassy to rubbery
8. 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
labile cells
Plasticizers
Collagenase/Remodelling
9. A molecular pathway in which the product of each reaction catalyzes the subsequent reaction.
Hemocompatibility
Permanent - replicate
Enzyme cascade
Water
10. ____ describes the ability of a device to function appropriately in the presence of blood.
micromachining
Amide
Phagocytosis
Hemocompatibility
11. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure
angiogenesis
Stress
Collagenase/Remodelling
Extrusion
12. High conductivity - isotropic - crystalline
Metals
Bioactive
Thrombin
negative feedback
13. Process of producing new blood vessels due to a lack on oxygen and thus inducing VEGF.
angiogenesis
cross - linking
micromachining
Extrusion
14. Enzyme that really gets the polmerization going!
Negative Feedback
Polymers - cross linking of polymers
Thrombin
Lower
15. Keloid scars form due to disfunction of ____.
mast cells
scars
Collagenase/Remodelling
Bioactive
16. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
Macrophages
Phagocytosis
cross - linking
Large
17. Are polymer additives used to lower glass transition temperature temperature.
Negative Feedback
photoactive polymers
Plasticizers
glassy to rubbery
18. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.
scars
Extrusion
fibrinogen - factor XIII
Hemocompatibility
19. Deformation that cannot be recovered once the load is removed from the material is ____ deformation.
Thermoplastics
Plastic
Thrombin
heparin
20. Cells that proliferate rapidly (fibroblasts)
labile cells
fibrinogen - factor XIII
Calibration
Intermolecular bonding - molecular weight
21. Where are the tissue factors found when they're inactivated
phagocytosis
Water
in cytoplasm
Water - oxygen - metal
22. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.
Regeneration/Repair
Number of polymers - molecular weight of polymer
stress
Proteases
23. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.
Permanent cells
Negative Feedback
Water - oxygen - metal
Collagenase/Remodelling
24. Disfunction of _____ (cells) producing collagenase during the _____ phase of wound healing may form Keloid scars.
macrophages - proliferation
negative feedback
Collagenase/Remodelling
Proteases
25. This type of feedback creates
Have to be in a clean room free of dust and biocontamination - expensive
Chemotaxis
Number of polymers - molecular weight of polymer
negative feedback
26. Higher Molecular weight degrades slower than ____ MW
mast cells
Lower
angiogenesis
Stable cells
27. Drawback of micromaching
Have to be in a clean room free of dust and biocontamination - expensive
Bioactive
Damage to cell membranes
hypoxin - angiogenesis
28. List two chemical characteristics of polymers:
micromachining
Water - oxygen - metal
Intermolecular bonding - molecular weight
Protein Absorption
29. _____ establishes a quantitative relationship between measured output values from an instrument and known standards of what is being measured.
hypoxin - angiogenesis
Calibration
fibrinogen - factor XIII
Water
30. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.
mast cells
Metals
standards of known properties
fibrinogen - factor XIII
31. Which of polyermization (condensation/free radical) would you choose to obtain a polymer of high molecular weight?
Number of polymers - molecular weight of polymer
Allogeneic
Free Radical
neutrophils - macrophages
32. Rather than randomly moving - moves in a directed cell migration manner for specific functions.
Free Radical
chemotaxis
Polydesperity index
macrophages - proliferation
33. ____ are enzymes responsible for protein degradation.
Proteases
Hemocompatibility
Water - oxygen - metal
Heparin
34. Foreign body giants cells are produced by fusion of ___.
negative feedback
Free Radical
Macrophages
Enzyme cascade
35. No healing of damage neurons is the result of ____ cells that are not able to ____.
negative feedback
low
fibrinogen - factor XIII
Permanent - replicate
36. Condition in which patients can literally bleed to death.
Stable cells
chemotaxis
Hemophilia
cross - linking
37. What types of wound healing results from injury with inflammation?
cross - linking
Large
Regeneration/Repair
labile cells
38. ____- are polymers that can be repeatedly softened by heating and hardened by cooling.
Thermoplastics
binding
stress
Regeneration/Repair
39. Mast cells release this
heparin
Lower
Polymers - cross linking of polymers
cross - linking
40. Process that makes long fibers (fiber drawing) by forcing a fluid through an oriface.
Endothelial cells
Hemophilia
free radical
Extrusion
41. Cells that proliferate slowly over time (aka liver)
Have to be in a clean room free of dust and biocontamination - expensive
macrophages - proliferation
Stable cells
low
42. Vascular endothelial growth factor is produced in response to ___ and stimulates ___.
heparin
hypoxin - angiogenesis
cross - linking
Hemocompatibility
43. During granulation stage of proliferation - growth factors that produce this ____(answer)_____ that function in degrading fibrin and replacing it with collagen.
Compression molding
free radical
Water - oxygen - metal
Proteases
44. Collagen ____ is responsible for the gradual gain in mechanical properties of wounded tissue between roughly 4 and 52 weeks post- injury.
cross - linking
Proteases
in cytoplasm
Higher
45. 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.
Large
Stress
autologous
micromachining
46. What type of materials are used for photolithography? (substrate is a silicon wafer - built up material is some _____ ____ )
free radical
Stress
photoactive polymers
Large
47. Activates tissue factors aka endothelial damage
Damage to cell membranes
glassy to rubbery
Higher
Hemophilia
48. The fibrous capsule surrounding a permanent implant is primarily composed of ___ cells and ____ (matrix).
Mast - Collagen
Macrophages
Stable cells
Extrusion
49. ____ is a measurement that characterizes the breadth of the distribution of a polymer's molecular weight.
Mast - Collagen
Plasticizers
heparin
Polydesperity index
50. The glass transition temperature of a poymer at which a polymer transforms from a ____ state to a ___ state.
glassy to rubbery
cycles
Regeneration/Repair
Collagenase