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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
Stable cells
Polymers - cross linking of polymers
alloys - passivation
photoactive polymers
2. The fibrous capsule surrounding a permanent implant is primarily composed of ___ cells and ____ (matrix).
Proteases
Polymers - cross linking of polymers
Mast - Collagen
Regeneration/Repair
3. Type of fiber drawing that controls details of a polymer by etching on a microscopic level; thus - controlling mechanical properties as well
Proteases
Thrombin
micromachining
fibrinogen - factor XIII
4. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.
Compression molding
Negative Feedback
Plasticizers
labile cells
5. Damaged cells at the site of injury (mast cells) release ___ (glycosaminoglycan).
heparin
Higher
Plasticizers
Allogeneic
6. The process of calibration establishes a quantitative relationship between ____ __ ___ _____ and the direct output of the intstrument (for example time/volume in GPC).
Phagocytosis
standards of known properties
Collagenase/Remodelling
negative feedback
7. Addition polymerization is commonly initiated by ___ - atoms that have an unpaired electron.
Protein Absorption
free radical
mast cells
Thrombin
8. Drawback of micromaching
Large
Lower
Have to be in a clean room free of dust and biocontamination - expensive
alloys - passivation
9. 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
Negative Feedback
chemotaxis
Large
10. Are polymer additives used to lower glass transition temperature temperature.
Hemocompatibility
Plasticizers
Metals
Water - oxygen - metal
11. ____ grafts are derived from the other humans.
Number of polymers - molecular weight of polymer
Permanent - replicate
Endothelial cells
Allogeneic
12. ____ are enzymes responsible for protein degradation.
Regeneration/Repair
Heparin
Proteases
alloys - passivation
13. During granulation stage of proliferation - growth factors that produce this ____(answer)_____ that function in degrading fibrin and replacing it with collagen.
Compression molding
Proteases
Stable cells
Plasticizers
14. Classify the following polymers into appropriate families based on their bond structure i.e. the polymer is an example of poly ____.
Amide
macrophages - proliferation
standards of known properties
Collagenase
15. Cells that proliferate rapidly (fibroblasts)
labile cells
Protein Absorption
hypoxin - angiogenesis
low
16. Polyethylene oxide grafting to biomaterials was developed to prevent coagulation by interfering with/preventing ___ ___.
Protein Absorption
mast cells
Hemophilia
Water - oxygen - metal
17. Is directed cell migration in response to a concentration gradient of soluble molecules.
stress
standards of known properties
Chemotaxis
Intermolecular bonding - molecular weight
18. ____ is a measurement that characterizes the breadth of the distribution of a polymer's molecular weight.
Polydesperity index
macrophages - proliferation
Amide
Phagocytosis
19. Process that makes long fibers (fiber drawing) by forcing a fluid through an oriface.
fibrinogen - factor XIII
stress
Extrusion
cross - linking
20. 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.
Collagenase
micromachining
autologous
Thrombin
21. Cells that proliferate slowly over time (aka liver)
Metals
negative feedback
Have to be in a clean room free of dust and biocontamination - expensive
Stable cells
22. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.
phagocytosis
Hemocompatibility
Plasticizers
Endothelial cells
23. Cells that don't proliferate (neurons)
Collagenase
angiogenesis
Permanent cells
Compression molding
24. Where are the tissue factors found when they're inactivated
Polydesperity index
in cytoplasm
Water - oxygen - metal
Amide
25. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.
labile cells
angiogenesis
Proteases
stress
26. _____ establishes a quantitative relationship between measured output values from an instrument and known standards of what is being measured.
Negative Feedback
Calibration
negative feedback
Amide
27. 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
Polymers - cross linking of polymers
Higher
Lower
28. A molecular pathway in which the product of each reaction catalyzes the subsequent reaction.
Stress
Enzyme cascade
cross - linking
Plastic
29. Keloid scars forms because disfuntion of
Heparin
heparin
Collagenase
Hemophilia
30. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
glassy to rubbery
Water - oxygen - metal
low
Plastic
31. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.
Enzyme cascade
low
cycles
Calibration
32. Thrombin activates several upstream factors.
Damage to cell membranes
Collagenase/Remodelling
cycles
Positive Feedback
33. The trigger for activation of enzymes (anything but endothelial cells!)
binding
Stress
heparin
Allogeneic
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.
Have to be in a clean room free of dust and biocontamination - expensive
macrophages - proliferation
alloys - passivation
Hemophilia
35. Enzymes (proteins) are not activated only when they are in contact with this type of cells
binding
Endothelial cells
heparin
phagocytosis
36. Activates tissue factors aka endothelial damage
Damage to cell membranes
Water
Collagenase/Remodelling
Chemotaxis
37. Enzyme that really gets the polmerization going!
Collagenase/Remodelling
Permanent cells
heparin
Thrombin
38. List two chemical characteristics of polymers:
Stable cells
Plastic
Intermolecular bonding - molecular weight
Thrombin
39. Keloid scars form due to disfunction of ____.
Macrophages
Collagenase/Remodelling
micromachining
Stress
40. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.
mast cells
macrophages - proliferation
Damage to cell membranes
Plasticizers
41. A ____ implant is designed to elicit specific - intended to host responses.
free radical
Bioactive
Water - oxygen - metal
Intermolecular bonding - molecular weight
42. Rather than randomly moving - moves in a directed cell migration manner for specific functions.
Higher
phagocytosis
labile cells
chemotaxis
43. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure
fibrinogen - factor XIII
Compression molding
Free Radical
Stress
44. Resulting from the build up of too much collagen at the surface of injury during the granulation tissue stage of proliferation
Macrophages
scars
micromachining
hypoxin - angiogenesis
45. Process of producing new blood vessels due to a lack on oxygen and thus inducing VEGF.
Calibration
fibrinogen - factor XIII
angiogenesis
Number of polymers - molecular weight of polymer
46. High conductivity - isotropic - crystalline
Large
Metals
Mast - Collagen
fibrinogen - factor XIII
47. Foreign body giants cells are produced by fusion of ___.
autologous
Amide
scars
Macrophages
48. No healing of damage neurons is the result of ____ cells that are not able to ____.
Permanent - replicate
Water - oxygen - metal
Metals
phagocytosis
49. The glass transition temperature of a poymer at which a polymer transforms from a ____ state to a ___ state.
Chemotaxis
Protein Absorption
glassy to rubbery
Extrusion
50. ____- are polymers that can be repeatedly softened by heating and hardened by cooling.
Free Radical
stress
Compression molding
Thermoplastics