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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. ____ describes the ability of a device to function appropriately in the presence of blood.
Proteases
Macrophages
Hemocompatibility
Calibration
2. The calculation of a polymer's molecular weight (weight average and number number average) is based upon values for ____ and ___.
Amide
Hemophilia
Number of polymers - molecular weight of polymer
Polymers - cross linking of polymers
3. The two types of white blood cells:
Thrombin
neutrophils - macrophages
scars
Calibration
4. High conductivity - isotropic - crystalline
Metals
Number of polymers - molecular weight of polymer
standards of known properties
Thrombin
5. ____ binds to anti- thrombin III (thrombin inhibitor) and increases its potency 1000- fold.
free radical
Plastic
Metals
Heparin
6. Addition polymerization is commonly initiated by ___ - atoms that have an unpaired electron.
Water
phagocytosis
free radical
Lower
7. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.
low
phagocytosis
negative feedback
Water - oxygen - metal
8. Classify the following polymers into appropriate families based on their bond structure i.e. the polymer is an example of poly ____.
Amide
Polydesperity index
autologous
Permanent cells
9. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.
stress
Intermolecular bonding - molecular weight
Stable cells
cross - linking
10. ______ Molecular weight degrades slower than lower MW
phagocytosis
Higher
Compression molding
Protein Absorption
11. Enzymes (proteins) are not activated only when they are in contact with this type of cells
macrophages - proliferation
Endothelial cells
Heparin
heparin
12. Process of producing new blood vessels due to a lack on oxygen and thus inducing VEGF.
in cytoplasm
angiogenesis
Regeneration/Repair
heparin
13. 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.
Water - oxygen - metal
autologous
standards of known properties
in cytoplasm
14. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.
Intermolecular bonding - molecular weight
free radical
Plastic
mast cells
15. Foreign body giants cells are produced by fusion of ___.
Macrophages
Polydesperity index
hypoxin - angiogenesis
neutrophils - macrophages
16. The fibrous capsule surrounding a permanent implant is primarily composed of ___ cells and ____ (matrix).
chemotaxis
Mast - Collagen
free radical
Water - oxygen - metal
17. Is directed cell migration in response to a concentration gradient of soluble molecules.
Stress
Collagenase
Compression molding
Chemotaxis
18. Where are the tissue factors found when they're inactivated
Mast - Collagen
Number of polymers - molecular weight of polymer
Large
in cytoplasm
19. What type of materials are used for photolithography? (substrate is a silicon wafer - built up material is some _____ ____ )
photoactive polymers
Protein Absorption
Metals
Proteases
20. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.
scars
Amide
Macrophages
fibrinogen - factor XIII
21. Deformation that cannot be recovered once the load is removed from the material is ____ deformation.
Plastic
binding
Have to be in a clean room free of dust and biocontamination - expensive
Damage to cell membranes
22. Cells that proliferate rapidly (fibroblasts)
Intermolecular bonding - molecular weight
labile cells
free radical
Amide
23. Cells that proliferate slowly over time (aka liver)
Chemotaxis
Stable cells
free radical
hypoxin - angiogenesis
24. Are polymer additives used to lower glass transition temperature temperature.
phagocytosis
Phagocytosis
Plasticizers
standards of known properties
25. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
Phagocytosis
heparin
in cytoplasm
Collagenase
26. During granulation stage of proliferation - growth factors that produce this ____(answer)_____ that function in degrading fibrin and replacing it with collagen.
Endothelial cells
angiogenesis
Thermoplastics
Proteases
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?
Intermolecular bonding - molecular weight
Compression molding
in cytoplasm
phagocytosis
28. Collagen ____ is responsible for the gradual gain in mechanical properties of wounded tissue between roughly 4 and 52 weeks post- injury.
cross - linking
heparin
heparin
low
29. The fatigue limit is value of applied stress below which a material will not fail no matter the number of ____ applied.
Lower
Permanent cells
cycles
Stable cells
30. Type of fiber drawing that controls details of a polymer by etching on a microscopic level; thus - controlling mechanical properties as well
micromachining
Metals
Permanent cells
Thermoplastics
31. Higher Molecular weight degrades slower than ____ MW
micromachining
Lower
Protein Absorption
in cytoplasm
32. What types of wound healing results from injury with inflammation?
Regeneration/Repair
Number of polymers - molecular weight of polymer
Higher
heparin
33. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.
labile cells
phagocytosis
Thrombin
Lower
34. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure
Thermoplastics
heparin
Allogeneic
Stress
35. _____ establishes a quantitative relationship between measured output values from an instrument and known standards of what is being measured.
Plasticizers
Calibration
fibrinogen - factor XIII
Phagocytosis
36. 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.
Amide
Large
chemotaxis
angiogenesis
37. Thrombin activates several upstream factors.
alloys - passivation
Positive Feedback
Bioactive
Thrombin
38. Enzyme that really gets the polmerization going!
negative feedback
scars
Thrombin
Proteases
39. Mast cells release this
Mast - Collagen
phagocytosis
hypoxin - angiogenesis
heparin
40. Damaged cells at the site of injury (mast cells) release ___ (glycosaminoglycan).
alloys - passivation
Lower
heparin
Plastic
41. A condensation polymerization results with an ester bond between two reactants and this comes off as a result
neutrophils - macrophages
Water
Have to be in a clean room free of dust and biocontamination - expensive
fibrinogen - factor XIII
42. Polyethylene oxide grafting to biomaterials was developed to prevent coagulation by interfering with/preventing ___ ___.
autologous
Number of polymers - molecular weight of polymer
Regeneration/Repair
Protein Absorption
43. This type of feedback creates
autologous
negative feedback
Hemophilia
Heparin
44. Two things needed in the end product of the creation of a scab
micromachining
Amide
Polymers - cross linking of polymers
cross - linking
45. Drawback of micromaching
Have to be in a clean room free of dust and biocontamination - expensive
alloys - passivation
Water
Endothelial cells
46. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
Intermolecular bonding - molecular weight
phagocytosis
Water - oxygen - metal
Protein Absorption
47. Keloid scars forms because disfuntion of
fibrinogen - factor XIII
Collagenase
heparin
Extrusion
48. ____ is a measurement that characterizes the breadth of the distribution of a polymer's molecular weight.
fibrinogen - factor XIII
Higher
Polydesperity index
in cytoplasm
49. Keloid scars form due to disfunction of ____.
Collagenase/Remodelling
Hemocompatibility
heparin
micromachining
50. Cells that don't proliferate (neurons)
Endothelial cells
Permanent cells
Hemophilia
Permanent - replicate