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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. Which of polyermization (condensation/free radical) would you choose to obtain a polymer of high molecular weight?
Free Radical
Permanent cells
Extrusion
heparin
2. _____ establishes a quantitative relationship between measured output values from an instrument and known standards of what is being measured.
Calibration
Have to be in a clean room free of dust and biocontamination - expensive
macrophages - proliferation
Water - oxygen - metal
3. A ____ implant is designed to elicit specific - intended to host responses.
stress
fibrinogen - factor XIII
Hemophilia
Bioactive
4. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
Phagocytosis
Heparin
free radical
macrophages - proliferation
5. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.
hypoxin - angiogenesis
binding
stress
Macrophages
6. Are polymer additives used to lower glass transition temperature temperature.
Thermoplastics
Phagocytosis
scars
Plasticizers
7. Activates tissue factors aka endothelial damage
Compression molding
Allogeneic
Plastic
Damage to cell membranes
8. ____ grafts are derived from the other humans.
heparin
standards of known properties
Allogeneic
Thrombin
9. ____ is a measurement that characterizes the breadth of the distribution of a polymer's molecular weight.
Positive Feedback
Polydesperity index
Phagocytosis
cross - linking
10. This cleaves into fibrinogen which creates fibrin (a sticky enzyme that allows blood to clot)
stress
Stress
Thrombin
Permanent - replicate
11. Where are the tissue factors found when they're inactivated
in cytoplasm
angiogenesis
hypoxin - angiogenesis
neutrophils - macrophages
12. Polyethylene oxide grafting to biomaterials was developed to prevent coagulation by interfering with/preventing ___ ___.
binding
glassy to rubbery
Protein Absorption
Thrombin
13. 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
Negative Feedback
Mast - Collagen
Thermoplastics
14. 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.
hypoxin - angiogenesis
Collagenase
alloys - passivation
micromachining
15. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
Macrophages
Calibration
Higher
Water - oxygen - metal
16. High conductivity - isotropic - crystalline
Metals
Thrombin
hypoxin - angiogenesis
Free Radical
17. No healing of damage neurons is the result of ____ cells that are not able to ____.
photoactive polymers
Amide
in cytoplasm
Permanent - replicate
18. Enzymes (proteins) are not activated only when they are in contact with this type of cells
Endothelial cells
scars
Water - oxygen - metal
Collagenase/Remodelling
19. During granulation stage of proliferation - growth factors that produce this ____(answer)_____ that function in degrading fibrin and replacing it with collagen.
Collagenase
Chemotaxis
Proteases
micromachining
20. What types of wound healing results from injury with inflammation?
cycles
Collagenase
Lower
Regeneration/Repair
21. Keloid scars forms because disfuntion of
angiogenesis
Mast - Collagen
heparin
Collagenase
22. Drawback of micromaching
Damage to cell membranes
Calibration
Have to be in a clean room free of dust and biocontamination - expensive
mast cells
23. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.
scars
standards of known properties
fibrinogen - factor XIII
Macrophages
24. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure
Polymers - cross linking of polymers
Stress
Permanent cells
Protein Absorption
25. Is directed cell migration in response to a concentration gradient of soluble molecules.
macrophages - proliferation
Number of polymers - molecular weight of polymer
glassy to rubbery
Chemotaxis
26. Process that makes long fibers (fiber drawing) by forcing a fluid through an oriface.
Permanent cells
Extrusion
cycles
macrophages - proliferation
27. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.
Lower
mast cells
Number of polymers - molecular weight of polymer
low
28. ____- are polymers that can be repeatedly softened by heating and hardened by cooling.
scars
Thermoplastics
Endothelial cells
Hemophilia
29. Enzyme that really gets the polmerization going!
Thrombin
micromachining
Water - oxygen - metal
Extrusion
30. Addition polymerization is commonly initiated by ___ - atoms that have an unpaired electron.
Heparin
labile cells
heparin
free radical
31. Collagen ____ is responsible for the gradual gain in mechanical properties of wounded tissue between roughly 4 and 52 weeks post- injury.
Endothelial cells
cross - linking
Large
Calibration
32. Cells that proliferate slowly over time (aka liver)
low
heparin
Stable cells
heparin
33. What type of materials are used for photolithography? (substrate is a silicon wafer - built up material is some _____ ____ )
Negative Feedback
photoactive polymers
Number of polymers - molecular weight of polymer
Hemocompatibility
34. Type of fiber drawing that controls details of a polymer by etching on a microscopic level; thus - controlling mechanical properties as well
alloys - passivation
Heparin
Stable cells
micromachining
35. ____ describes the ability of a device to function appropriately in the presence of blood.
Damage to cell membranes
Hemocompatibility
neutrophils - macrophages
Positive Feedback
36. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.
Positive Feedback
phagocytosis
low
Collagenase/Remodelling
37. Keloid scars form due to disfunction of ____.
in cytoplasm
Calibration
Collagenase/Remodelling
fibrinogen - factor XIII
38. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.
phagocytosis
Plastic
Amide
Enzyme cascade
39. Damaged cells at the site of injury (mast cells) release ___ (glycosaminoglycan).
scars
heparin
Thrombin
phagocytosis
40. Mast cells release this
Stable cells
heparin
cycles
Intermolecular bonding - molecular weight
41. Resulting from the build up of too much collagen at the surface of injury during the granulation tissue stage of proliferation
scars
fibrinogen - factor XIII
Water
glassy to rubbery
42. Rather than randomly moving - moves in a directed cell migration manner for specific functions.
Protein Absorption
in cytoplasm
fibrinogen - factor XIII
chemotaxis
43. Two things needed in the end product of the creation of a scab
Amide
Plasticizers
Polymers - cross linking of polymers
Negative Feedback
44. The process of calibration establishes a quantitative relationship between ____ __ ___ _____ and the direct output of the intstrument (for example time/volume in GPC).
Negative Feedback
macrophages - proliferation
Regeneration/Repair
standards of known properties
45. ______ Molecular weight degrades slower than lower MW
Extrusion
Plastic
Stress
Higher
46. ____ are enzymes responsible for protein degradation.
Regeneration/Repair
Proteases
neutrophils - macrophages
Enzyme cascade
47. Higher Molecular weight degrades slower than ____ MW
Extrusion
Proteases
mast cells
Lower
48. Cells that proliferate rapidly (fibroblasts)
labile cells
Damage to cell membranes
binding
in cytoplasm
49. Thrombin activates several upstream factors.
Collagenase/Remodelling
Stress
Positive Feedback
mast cells
50. Condition in which patients can literally bleed to death.
Number of polymers - molecular weight of polymer
Hemophilia
low
Lower