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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. High conductivity - isotropic - crystalline
Metals
Plastic
Collagenase/Remodelling
Have to be in a clean room free of dust and biocontamination - expensive
2. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
Bioactive
Water - oxygen - metal
Permanent cells
Thermoplastics
3. ____ binds to anti- thrombin III (thrombin inhibitor) and increases its potency 1000- fold.
Thrombin
Heparin
in cytoplasm
Enzyme cascade
4. Mast cells release this
Compression molding
heparin
Permanent - replicate
hypoxin - angiogenesis
5. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure
Stress
Permanent - replicate
Regeneration/Repair
Negative Feedback
6. Activates tissue factors aka endothelial damage
Heparin
cross - linking
Chemotaxis
Damage to cell membranes
7. Process of producing new blood vessels due to a lack on oxygen and thus inducing VEGF.
Plasticizers
Higher
angiogenesis
Polydesperity index
8. ____ are enzymes responsible for protein degradation.
Proteases
neutrophils - macrophages
phagocytosis
Intermolecular bonding - molecular weight
9. Classify the following polymers into appropriate families based on their bond structure i.e. the polymer is an example of poly ____.
Enzyme cascade
Amide
Stable cells
binding
10. Deformation that cannot be recovered once the load is removed from the material is ____ deformation.
mast cells
Plastic
Lower
Stable cells
11. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.
phagocytosis
low
Large
glassy to rubbery
12. Disfunction of _____ (cells) producing collagenase during the _____ phase of wound healing may form Keloid scars.
Proteases
Hemophilia
Negative Feedback
macrophages - proliferation
13. What types of wound healing results from injury with inflammation?
Hemocompatibility
Positive Feedback
phagocytosis
Regeneration/Repair
14. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
Metals
Chemotaxis
Phagocytosis
Heparin
15. Addition polymerization is commonly initiated by ___ - atoms that have an unpaired electron.
free radical
Heparin
heparin
Thrombin
16. Resulting from the build up of too much collagen at the surface of injury during the granulation tissue stage of proliferation
cross - linking
free radical
scars
Enzyme cascade
17. ____ describes the ability of a device to function appropriately in the presence of blood.
Amide
Hemocompatibility
binding
Stress
18. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.
phagocytosis
Hemophilia
low
heparin
19. Enzyme that really gets the polmerization going!
Proteases
in cytoplasm
Thrombin
angiogenesis
20. The glass transition temperature of a poymer at which a polymer transforms from a ____ state to a ___ state.
Intermolecular bonding - molecular weight
Amide
Water - oxygen - metal
glassy to rubbery
21. What type of materials are used for photolithography? (substrate is a silicon wafer - built up material is some _____ ____ )
Amide
Regeneration/Repair
photoactive polymers
heparin
22. Cells that proliferate slowly over time (aka liver)
Have to be in a clean room free of dust and biocontamination - expensive
Metals
Stable cells
Stress
23. This type of feedback creates
Proteases
binding
Positive Feedback
negative feedback
24. No healing of damage neurons is the result of ____ cells that are not able to ____.
heparin
Collagenase
Permanent - replicate
Intermolecular bonding - molecular weight
25. Are polymer additives used to lower glass transition temperature temperature.
Plasticizers
neutrophils - macrophages
fibrinogen - factor XIII
Thermoplastics
26. The fatigue limit is value of applied stress below which a material will not fail no matter the number of ____ applied.
glassy to rubbery
cycles
photoactive polymers
Collagenase/Remodelling
27. The fibrous capsule surrounding a permanent implant is primarily composed of ___ cells and ____ (matrix).
Mast - Collagen
Number of polymers - molecular weight of polymer
Collagenase
Heparin
28. Higher Molecular weight degrades slower than ____ MW
Positive Feedback
Intermolecular bonding - molecular weight
Lower
Higher
29. Enzymes (proteins) are not activated only when they are in contact with this type of cells
Endothelial cells
Phagocytosis
Mast - Collagen
Allogeneic
30. Collagen ____ is responsible for the gradual gain in mechanical properties of wounded tissue between roughly 4 and 52 weeks post- injury.
heparin
cross - linking
in cytoplasm
stress
31. ______ Molecular weight degrades slower than lower MW
Higher
Collagenase/Remodelling
mast cells
Collagenase
32. Process that makes long fibers (fiber drawing) by forcing a fluid through an oriface.
macrophages - proliferation
Extrusion
cross - linking
Thermoplastics
33. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.
Thrombin
Extrusion
Higher
mast cells
34. 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
Phagocytosis
Collagenase/Remodelling
Negative Feedback
35. ____- are polymers that can be repeatedly softened by heating and hardened by cooling.
Thermoplastics
Hemocompatibility
photoactive polymers
scars
36. Cells that don't proliferate (neurons)
Stress
Permanent cells
mast cells
Thrombin
37. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.
Negative Feedback
Permanent cells
Phagocytosis
Hemocompatibility
38. Damaged cells at the site of injury (mast cells) release ___ (glycosaminoglycan).
Stress
binding
Intermolecular bonding - molecular weight
heparin
39. Which of polyermization (condensation/free radical) would you choose to obtain a polymer of high molecular weight?
Damage to cell membranes
Free Radical
labile cells
Polydesperity index
40. Keloid scars forms because disfuntion of
Phagocytosis
micromachining
Collagenase
Number of polymers - molecular weight of polymer
41. 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.
Negative Feedback
fibrinogen - factor XIII
hypoxin - angiogenesis
Large
42. ____ grafts are derived from the other humans.
Allogeneic
Thermoplastics
stress
Mast - Collagen
43. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.
labile cells
Water
stress
Proteases
44. A molecular pathway in which the product of each reaction catalyzes the subsequent reaction.
Enzyme cascade
free radical
phagocytosis
labile cells
45. 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?
Macrophages
mast cells
fibrinogen - factor XIII
Compression molding
46. Two things needed in the end product of the creation of a scab
Stress
Permanent cells
Heparin
Polymers - cross linking of polymers
47. Rather than randomly moving - moves in a directed cell migration manner for specific functions.
Plastic
Hemophilia
Water
chemotaxis
48. Condition in which patients can literally bleed to death.
Proteases
binding
Hemophilia
Collagenase/Remodelling
49. The two types of white blood cells:
hypoxin - angiogenesis
macrophages - proliferation
neutrophils - macrophages
Permanent cells
50. Drawback of micromaching
Have to be in a clean room free of dust and biocontamination - expensive
Thrombin
Hemophilia
in cytoplasm