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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. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.
Hemophilia
Endothelial cells
stress
Hemocompatibility
2. Cells that proliferate slowly over time (aka liver)
negative feedback
Stable cells
Stress
heparin
3. Resulting from the build up of too much collagen at the surface of injury during the granulation tissue stage of proliferation
Extrusion
scars
Thrombin
Collagenase/Remodelling
4. Classify the following polymers into appropriate families based on their bond structure i.e. the polymer is an example of poly ____.
Amide
Plastic
micromachining
Enzyme cascade
5. The trigger for activation of enzymes (anything but endothelial cells!)
Metals
binding
Polydesperity index
angiogenesis
6. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.
Damage to cell membranes
low
Number of polymers - molecular weight of polymer
in cytoplasm
7. Condition in which patients can literally bleed to death.
glassy to rubbery
Hemophilia
Permanent cells
Protein Absorption
8. A condensation polymerization results with an ester bond between two reactants and this comes off as a result
Thrombin
Thermoplastics
Stress
Water
9. Keloid scars forms because disfuntion of
Collagenase
free radical
Amide
scars
10. Process that makes long fibers (fiber drawing) by forcing a fluid through an oriface.
Mast - Collagen
Extrusion
angiogenesis
Collagenase
11. 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
Mast - Collagen
Chemotaxis
12. Activates tissue factors aka endothelial damage
Endothelial cells
Enzyme cascade
chemotaxis
Damage to cell membranes
13. ____ binds to anti- thrombin III (thrombin inhibitor) and increases its potency 1000- fold.
Polydesperity index
Damage to cell membranes
stress
Heparin
14. This type of feedback creates
Thermoplastics
Damage to cell membranes
heparin
negative feedback
15. No healing of damage neurons is the result of ____ cells that are not able to ____.
Bioactive
Proteases
Permanent - replicate
Enzyme cascade
16. The fibrous capsule surrounding a permanent implant is primarily composed of ___ cells and ____ (matrix).
Permanent - replicate
Mast - Collagen
chemotaxis
in cytoplasm
17. Mast cells release this
glassy to rubbery
cycles
heparin
Damage to cell membranes
18. ____ describes the ability of a device to function appropriately in the presence of blood.
Bioactive
Endothelial cells
Mast - Collagen
Hemocompatibility
19. Cells that proliferate rapidly (fibroblasts)
labile cells
binding
stress
Amide
20. Cells that don't proliferate (neurons)
Permanent cells
labile cells
Compression molding
Negative Feedback
21. ____ grafts are derived from the other humans.
in cytoplasm
Stress
hypoxin - angiogenesis
Allogeneic
22. Collagen ____ is responsible for the gradual gain in mechanical properties of wounded tissue between roughly 4 and 52 weeks post- injury.
Large
cross - linking
free radical
macrophages - proliferation
23. What types of wound healing results from injury with inflammation?
Regeneration/Repair
Lower
Compression molding
Chemotaxis
24. Disfunction of _____ (cells) producing collagenase during the _____ phase of wound healing may form Keloid scars.
Water - oxygen - metal
macrophages - proliferation
Have to be in a clean room free of dust and biocontamination - expensive
Plasticizers
25. The fatigue limit is value of applied stress below which a material will not fail no matter the number of ____ applied.
micromachining
in cytoplasm
cycles
Plasticizers
26. Damaged cells at the site of injury (mast cells) release ___ (glycosaminoglycan).
heparin
cycles
Macrophages
stress
27. 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.
Phagocytosis
Large
mast cells
Regeneration/Repair
28. Two things needed in the end product of the creation of a scab
Thermoplastics
Intermolecular bonding - molecular weight
stress
Polymers - cross linking of polymers
29. Drawback of micromaching
Proteases
Intermolecular bonding - molecular weight
Have to be in a clean room free of dust and biocontamination - expensive
Metals
30. The two types of white blood cells:
heparin
Large
neutrophils - macrophages
Protein Absorption
31. ____ are enzymes responsible for protein degradation.
macrophages - proliferation
Have to be in a clean room free of dust and biocontamination - expensive
Proteases
alloys - passivation
32. Polyethylene oxide grafting to biomaterials was developed to prevent coagulation by interfering with/preventing ___ ___.
Protein Absorption
autologous
Regeneration/Repair
alloys - passivation
33. A ____ implant is designed to elicit specific - intended to host responses.
Higher
Bioactive
photoactive polymers
Protein Absorption
34. Process of producing new blood vessels due to a lack on oxygen and thus inducing VEGF.
Bioactive
neutrophils - macrophages
Chemotaxis
angiogenesis
35. Which of polyermization (condensation/free radical) would you choose to obtain a polymer of high molecular weight?
chemotaxis
Free Radical
fibrinogen - factor XIII
neutrophils - macrophages
36. This cleaves into fibrinogen which creates fibrin (a sticky enzyme that allows blood to clot)
Calibration
Thrombin
Regeneration/Repair
Large
37. The calculation of a polymer's molecular weight (weight average and number number average) is based upon values for ____ and ___.
Bioactive
Number of polymers - molecular weight of polymer
micromachining
Water - oxygen - metal
38. 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.
autologous
Allogeneic
Proteases
Stress
39. The glass transition temperature of a poymer at which a polymer transforms from a ____ state to a ___ state.
Polydesperity index
Permanent - replicate
macrophages - proliferation
glassy to rubbery
40. Vascular endothelial growth factor is produced in response to ___ and stimulates ___.
Macrophages
hypoxin - angiogenesis
Hemocompatibility
free radical
41. Foreign body giants cells are produced by fusion of ___.
Have to be in a clean room free of dust and biocontamination - expensive
Macrophages
Water - oxygen - metal
Stable cells
42. What type of materials are used for photolithography? (substrate is a silicon wafer - built up material is some _____ ____ )
Allogeneic
Permanent cells
Macrophages
photoactive polymers
43. _____ establishes a quantitative relationship between measured output values from an instrument and known standards of what is being measured.
Compression molding
free radical
neutrophils - macrophages
Calibration
44. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.
Protein Absorption
Intermolecular bonding - molecular weight
phagocytosis
Bioactive
45. Where are the tissue factors found when they're inactivated
hypoxin - angiogenesis
free radical
in cytoplasm
Damage to cell membranes
46. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
Permanent cells
Phagocytosis
heparin
chemotaxis
47. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
Water - oxygen - metal
Have to be in a clean room free of dust and biocontamination - expensive
Hemocompatibility
Enzyme cascade
48. 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?
Permanent cells
Collagenase
Extrusion
Compression molding
49. Thrombin activates several upstream factors.
Positive Feedback
Collagenase/Remodelling
standards of known properties
Stable cells
50. During granulation stage of proliferation - growth factors that produce this ____(answer)_____ that function in degrading fibrin and replacing it with collagen.
Free Radical
Intermolecular bonding - molecular weight
Proteases
Phagocytosis