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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. Thrombin activates several upstream factors.
alloys - passivation
Positive Feedback
Endothelial cells
Negative Feedback
2. Cells that proliferate slowly over time (aka liver)
hypoxin - angiogenesis
Proteases
glassy to rubbery
Stable cells
3. The fibrous capsule surrounding a permanent implant is primarily composed of ___ cells and ____ (matrix).
neutrophils - macrophages
Metals
micromachining
Mast - Collagen
4. Collagen ____ is responsible for the gradual gain in mechanical properties of wounded tissue between roughly 4 and 52 weeks post- injury.
low
Phagocytosis
chemotaxis
cross - linking
5. ____ grafts are derived from the other humans.
Allogeneic
Protein Absorption
heparin
Permanent cells
6. Condition in which patients can literally bleed to death.
Stable cells
heparin
Hemophilia
Intermolecular bonding - molecular weight
7. Vascular endothelial growth factor is produced in response to ___ and stimulates ___.
stress
Damage to cell membranes
neutrophils - macrophages
hypoxin - angiogenesis
8. Activates tissue factors aka endothelial damage
fibrinogen - factor XIII
Damage to cell membranes
Extrusion
Regeneration/Repair
9. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
in cytoplasm
mast cells
Water - oxygen - metal
labile cells
10. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.
low
Proteases
Phagocytosis
stress
11. Disfunction of _____ (cells) producing collagenase during the _____ phase of wound healing may form Keloid scars.
heparin
Damage to cell membranes
macrophages - proliferation
Large
12. Addition polymerization is commonly initiated by ___ - atoms that have an unpaired electron.
free radical
Have to be in a clean room free of dust and biocontamination - expensive
Extrusion
Damage to cell membranes
13. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure
Stress
Positive Feedback
Polydesperity index
Plastic
14. 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?
Water - oxygen - metal
Proteases
Compression molding
Large
15. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
Phagocytosis
Higher
Have to be in a clean room free of dust and biocontamination - expensive
Positive Feedback
16. Foreign body giants cells are produced by fusion of ___.
chemotaxis
Compression molding
Macrophages
angiogenesis
17. During granulation stage of proliferation - growth factors that produce this ____(answer)_____ that function in degrading fibrin and replacing it with collagen.
glassy to rubbery
Proteases
chemotaxis
Phagocytosis
18. The calculation of a polymer's molecular weight (weight average and number number average) is based upon values for ____ and ___.
fibrinogen - factor XIII
Have to be in a clean room free of dust and biocontamination - expensive
Thrombin
Number of polymers - molecular weight of polymer
19. 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.
Compression molding
Endothelial cells
Heparin
Large
20. Type of fiber drawing that controls details of a polymer by etching on a microscopic level; thus - controlling mechanical properties as well
macrophages - proliferation
micromachining
Extrusion
Number of polymers - molecular weight of polymer
21. Higher Molecular weight degrades slower than ____ MW
photoactive polymers
Lower
Plastic
Stable cells
22. What type of materials are used for photolithography? (substrate is a silicon wafer - built up material is some _____ ____ )
photoactive polymers
Polydesperity index
Stress
neutrophils - macrophages
23. A ____ implant is designed to elicit specific - intended to host responses.
fibrinogen - factor XIII
negative feedback
Bioactive
free radical
24. ____- are polymers that can be repeatedly softened by heating and hardened by cooling.
Thermoplastics
Plasticizers
Free Radical
free radical
25. Process of producing new blood vessels due to a lack on oxygen and thus inducing VEGF.
angiogenesis
Thermoplastics
Polydesperity index
Polymers - cross linking of polymers
26. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.
Thermoplastics
glassy to rubbery
Proteases
Negative Feedback
27. Deformation that cannot be recovered once the load is removed from the material is ____ deformation.
scars
Plastic
cross - linking
in cytoplasm
28. Polyethylene oxide grafting to biomaterials was developed to prevent coagulation by interfering with/preventing ___ ___.
Plastic
Thermoplastics
Protein Absorption
micromachining
29. What types of wound healing results from injury with inflammation?
Polydesperity index
Collagenase/Remodelling
chemotaxis
Regeneration/Repair
30. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.
negative feedback
Collagenase/Remodelling
fibrinogen - factor XIII
Protein Absorption
31. The fatigue limit is value of applied stress below which a material will not fail no matter the number of ____ applied.
photoactive polymers
cycles
Plastic
Damage to cell membranes
32. The glass transition temperature of a poymer at which a polymer transforms from a ____ state to a ___ state.
Macrophages
Metals
glassy to rubbery
Allogeneic
33. Rather than randomly moving - moves in a directed cell migration manner for specific functions.
Number of polymers - molecular weight of polymer
Thrombin
chemotaxis
heparin
34. Cells that don't proliferate (neurons)
Extrusion
Proteases
Permanent cells
Regeneration/Repair
35. A condensation polymerization results with an ester bond between two reactants and this comes off as a result
Thermoplastics
Heparin
Water
low
36. Are polymer additives used to lower glass transition temperature temperature.
Have to be in a clean room free of dust and biocontamination - expensive
Damage to cell membranes
Plastic
Plasticizers
37. Drawback of micromaching
Water
Have to be in a clean room free of dust and biocontamination - expensive
in cytoplasm
Permanent - replicate
38. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.
mast cells
Proteases
Metals
heparin
39. ______ Molecular weight degrades slower than lower MW
Regeneration/Repair
Higher
binding
Damage to cell membranes
40. Enzyme that really gets the polmerization going!
Thrombin
labile cells
Negative Feedback
Have to be in a clean room free of dust and biocontamination - expensive
41. Process that makes long fibers (fiber drawing) by forcing a fluid through an oriface.
in cytoplasm
Enzyme cascade
Hemophilia
Extrusion
42. ____ are enzymes responsible for protein degradation.
Regeneration/Repair
cross - linking
Proteases
photoactive polymers
43. High conductivity - isotropic - crystalline
Metals
binding
cross - linking
Number of polymers - molecular weight of polymer
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
photoactive polymers
labile cells
Calibration
45. Keloid scars form due to disfunction of ____.
Collagenase/Remodelling
Metals
Amide
Free Radical
46. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.
neutrophils - macrophages
low
Intermolecular bonding - molecular weight
Endothelial cells
47. Keloid scars forms because disfuntion of
Negative Feedback
Collagenase
mast cells
Phagocytosis
48. This cleaves into fibrinogen which creates fibrin (a sticky enzyme that allows blood to clot)
Amide
labile cells
in cytoplasm
Thrombin
49. The two types of white blood cells:
angiogenesis
Water - oxygen - metal
neutrophils - macrophages
Metals
50. ____ describes the ability of a device to function appropriately in the presence of blood.
Hemocompatibility
Mast - Collagen
phagocytosis
heparin