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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. Deformation that cannot be recovered once the load is removed from the material is ____ deformation.
Higher
Plastic
low
mast cells
2. _____ establishes a quantitative relationship between measured output values from an instrument and known standards of what is being measured.
labile cells
Calibration
Collagenase/Remodelling
chemotaxis
3. The trigger for activation of enzymes (anything but endothelial cells!)
Higher
binding
scars
Collagenase
4. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.
low
Calibration
Stress
fibrinogen - factor XIII
5. The fibrous capsule surrounding a permanent implant is primarily composed of ___ cells and ____ (matrix).
neutrophils - macrophages
Mast - Collagen
autologous
Chemotaxis
6. Cells that proliferate rapidly (fibroblasts)
labile cells
Permanent cells
hypoxin - angiogenesis
Proteases
7. ______ Molecular weight degrades slower than lower MW
Higher
Calibration
Permanent - replicate
Regeneration/Repair
8. Enzymes (proteins) are not activated only when they are in contact with this type of cells
Extrusion
low
autologous
Endothelial cells
9. Resulting from the build up of too much collagen at the surface of injury during the granulation tissue stage of proliferation
Mast - Collagen
scars
Bioactive
cross - linking
10. Polyethylene oxide grafting to biomaterials was developed to prevent coagulation by interfering with/preventing ___ ___.
Heparin
Protein Absorption
Mast - Collagen
Enzyme cascade
11. The process of calibration establishes a quantitative relationship between ____ __ ___ _____ and the direct output of the intstrument (for example time/volume in GPC).
Stable cells
free radical
standards of known properties
Number of polymers - molecular weight of polymer
12. Classify the following polymers into appropriate families based on their bond structure i.e. the polymer is an example of poly ____.
negative feedback
cross - linking
Amide
Higher
13. Process that makes long fibers (fiber drawing) by forcing a fluid through an oriface.
Free Radical
Chemotaxis
Extrusion
Stable cells
14. Activates tissue factors aka endothelial damage
Calibration
Bioactive
Proteases
Damage to cell membranes
15. ____ are enzymes responsible for protein degradation.
Proteases
Metals
Stress
Macrophages
16. Are polymer additives used to lower glass transition temperature temperature.
Plasticizers
heparin
Hemocompatibility
stress
17. Where are the tissue factors found when they're inactivated
in cytoplasm
mast cells
alloys - passivation
Positive Feedback
18. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.
low
Chemotaxis
heparin
Negative Feedback
19. Which of polyermization (condensation/free radical) would you choose to obtain a polymer of high molecular weight?
Water
negative feedback
neutrophils - macrophages
Free Radical
20. During granulation stage of proliferation - growth factors that produce this ____(answer)_____ that function in degrading fibrin and replacing it with collagen.
chemotaxis
Proteases
Polymers - cross linking of polymers
Large
21. Enzyme that really gets the polmerization going!
cross - linking
Thrombin
Metals
Water - oxygen - metal
22. Keloid scars form due to disfunction of ____.
labile cells
Collagenase/Remodelling
Lower
free radical
23. The calculation of a polymer's molecular weight (weight average and number number average) is based upon values for ____ and ___.
Mast - Collagen
Stable cells
Number of polymers - molecular weight of polymer
Hemocompatibility
24. What type of materials are used for photolithography? (substrate is a silicon wafer - built up material is some _____ ____ )
cross - linking
Proteases
Thrombin
photoactive polymers
25. Vascular endothelial growth factor is produced in response to ___ and stimulates ___.
free radical
Amide
hypoxin - angiogenesis
alloys - passivation
26. ____ is a measurement that characterizes the breadth of the distribution of a polymer's molecular weight.
Large
Hemocompatibility
Polydesperity index
Metals
27. The two types of white blood cells:
Plasticizers
neutrophils - macrophages
Chemotaxis
Polydesperity index
28. 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.
labile cells
scars
autologous
Positive Feedback
29. Condition in which patients can literally bleed to death.
Thrombin
Bioactive
Hemophilia
Compression molding
30. 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.
Intermolecular bonding - molecular weight
Large
Protein Absorption
Proteases
31. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.
in cytoplasm
Stress
fibrinogen - factor XIII
micromachining
32. ____ binds to anti- thrombin III (thrombin inhibitor) and increases its potency 1000- fold.
alloys - passivation
labile cells
Heparin
Polydesperity index
33. Process of producing new blood vessels due to a lack on oxygen and thus inducing VEGF.
angiogenesis
Large
Higher
Macrophages
34. Higher Molecular weight degrades slower than ____ MW
Chemotaxis
Water
Allogeneic
Lower
35. Keloid scars forms because disfuntion of
Plasticizers
Collagenase
micromachining
Phagocytosis
36. ____ describes the ability of a device to function appropriately in the presence of blood.
Thrombin
Hemocompatibility
micromachining
Positive Feedback
37. What types of wound healing results from injury with inflammation?
mast cells
Number of polymers - molecular weight of polymer
Regeneration/Repair
Higher
38. A ____ implant is designed to elicit specific - intended to host responses.
Proteases
Bioactive
Calibration
stress
39. Cells that proliferate slowly over time (aka liver)
low
cross - linking
Thrombin
Stable cells
40. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.
mast cells
angiogenesis
cross - linking
Phagocytosis
41. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
chemotaxis
Phagocytosis
labile cells
Allogeneic
42. Damaged cells at the site of injury (mast cells) release ___ (glycosaminoglycan).
Endothelial cells
heparin
neutrophils - macrophages
fibrinogen - factor XIII
43. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure
Stress
Proteases
Mast - Collagen
Permanent cells
44. 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
Number of polymers - molecular weight of polymer
Free Radical
Polydesperity index
45. Type of fiber drawing that controls details of a polymer by etching on a microscopic level; thus - controlling mechanical properties as well
Positive Feedback
Hemophilia
fibrinogen - factor XIII
micromachining
46. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
Water - oxygen - metal
Thermoplastics
angiogenesis
Permanent - replicate
47. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.
phagocytosis
Damage to cell membranes
free radical
Permanent cells
48. Disfunction of _____ (cells) producing collagenase during the _____ phase of wound healing may form Keloid scars.
Positive Feedback
macrophages - proliferation
Large
Allogeneic
49. Drawback of micromaching
Have to be in a clean room free of dust and biocontamination - expensive
autologous
Protein Absorption
Higher
50. Foreign body giants cells are produced by fusion of ___.
labile cells
hypoxin - angiogenesis
Macrophages
autologous