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Test your basic knowledge |
Bio Engineering
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Study First
Subject
:
engineering
Instructions:
Answer 50 questions in 15 minutes.
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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. Addition polymerization is commonly initiated by ___ - atoms that have an unpaired electron.
macrophages - proliferation
heparin
Phagocytosis
free radical
2. A molecular pathway in which the product of each reaction catalyzes the subsequent reaction.
Large
binding
Enzyme cascade
Proteases
3. Cells that proliferate rapidly (fibroblasts)
Have to be in a clean room free of dust and biocontamination - expensive
labile cells
negative feedback
phagocytosis
4. The two types of white blood cells:
neutrophils - macrophages
Thrombin
Mast - Collagen
alloys - passivation
5. Enzyme that really gets the polmerization going!
scars
chemotaxis
Endothelial cells
Thrombin
6. Disfunction of _____ (cells) producing collagenase during the _____ phase of wound healing may form Keloid scars.
macrophages - proliferation
heparin
neutrophils - macrophages
Protein Absorption
7. ____ are enzymes responsible for protein degradation.
fibrinogen - factor XIII
Thrombin
Proteases
Compression molding
8. 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.
Extrusion
Large
Amide
scars
9. No healing of damage neurons is the result of ____ cells that are not able to ____.
Negative Feedback
glassy to rubbery
Plastic
Permanent - replicate
10. During granulation stage of proliferation - growth factors that produce this ____(answer)_____ that function in degrading fibrin and replacing it with collagen.
Higher
Proteases
alloys - passivation
phagocytosis
11. ____ is a measurement that characterizes the breadth of the distribution of a polymer's molecular weight.
Polymers - cross linking of polymers
cycles
Thermoplastics
Polydesperity index
12. Foreign body giants cells are produced by fusion of ___.
Macrophages
stress
Protein Absorption
Phagocytosis
13. Mast cells release this
Damage to cell membranes
heparin
Plasticizers
Mast - Collagen
14. Keloid scars form due to disfunction of ____.
Lower
hypoxin - angiogenesis
Proteases
Collagenase/Remodelling
15. Type of fiber drawing that controls details of a polymer by etching on a microscopic level; thus - controlling mechanical properties as well
chemotaxis
glassy to rubbery
Bioactive
micromachining
16. Two things needed in the end product of the creation of a scab
Polymers - cross linking of polymers
Compression molding
in cytoplasm
Calibration
17. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
Free Radical
Phagocytosis
Bioactive
Have to be in a clean room free of dust and biocontamination - expensive
18. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure
Allogeneic
Stress
Thrombin
cross - linking
19. This type of feedback creates
Thrombin
Enzyme cascade
negative feedback
labile cells
20. ______ Molecular weight degrades slower than lower MW
Thermoplastics
Higher
low
Thrombin
21. Classify the following polymers into appropriate families based on their bond structure i.e. the polymer is an example of poly ____.
hypoxin - angiogenesis
Permanent - replicate
Water - oxygen - metal
Amide
22. _____ establishes a quantitative relationship between measured output values from an instrument and known standards of what is being measured.
free radical
glassy to rubbery
Calibration
fibrinogen - factor XIII
23. The calculation of a polymer's molecular weight (weight average and number number average) is based upon values for ____ and ___.
Number of polymers - molecular weight of polymer
Thermoplastics
Higher
Hemophilia
24. Drawback of micromaching
Chemotaxis
Have to be in a clean room free of dust and biocontamination - expensive
Water
Polymers - cross linking of polymers
25. The glass transition temperature of a poymer at which a polymer transforms from a ____ state to a ___ state.
Phagocytosis
glassy to rubbery
Negative Feedback
Amide
26. Is directed cell migration in response to a concentration gradient of soluble molecules.
Chemotaxis
Polydesperity index
Permanent - replicate
Plasticizers
27. Rather than randomly moving - moves in a directed cell migration manner for specific functions.
in cytoplasm
cycles
neutrophils - macrophages
chemotaxis
28. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.
alloys - passivation
stress
micromachining
Permanent - replicate
29. ____- are polymers that can be repeatedly softened by heating and hardened by cooling.
Collagenase/Remodelling
Thermoplastics
Phagocytosis
Hemophilia
30. A ____ implant is designed to elicit specific - intended to host responses.
Positive Feedback
Water - oxygen - metal
Free Radical
Bioactive
31. Are polymer additives used to lower glass transition temperature temperature.
cycles
Permanent cells
Large
Plasticizers
32. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.
autologous
Thermoplastics
neutrophils - macrophages
Negative Feedback
33. ____ grafts are derived from the other humans.
Macrophages
Allogeneic
stress
Thermoplastics
34. This cleaves into fibrinogen which creates fibrin (a sticky enzyme that allows blood to clot)
Thrombin
Proteases
Positive Feedback
low
35. What type of materials are used for photolithography? (substrate is a silicon wafer - built up material is some _____ ____ )
mast cells
photoactive polymers
Bioactive
labile cells
36. Thrombin activates several upstream factors.
binding
Positive Feedback
Thrombin
Endothelial cells
37. Cells that proliferate slowly over time (aka liver)
heparin
binding
Thermoplastics
Stable cells
38. A condensation polymerization results with an ester bond between two reactants and this comes off as a result
Water
autologous
stress
heparin
39. ____ describes the ability of a device to function appropriately in the presence of blood.
Extrusion
Hemophilia
Hemocompatibility
Negative Feedback
40. Keloid scars forms because disfuntion of
macrophages - proliferation
Collagenase
angiogenesis
Heparin
41. Polyethylene oxide grafting to biomaterials was developed to prevent coagulation by interfering with/preventing ___ ___.
Protein Absorption
Free Radical
angiogenesis
Compression molding
42. Activates tissue factors aka endothelial damage
Damage to cell membranes
chemotaxis
Free Radical
Heparin
43. Vascular endothelial growth factor is produced in response to ___ and stimulates ___.
Allogeneic
Amide
hypoxin - angiogenesis
Thermoplastics
44. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.
Collagenase/Remodelling
Polymers - cross linking of polymers
low
Positive Feedback
45. 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
Thermoplastics
in cytoplasm
alloys - passivation
46. The process of calibration establishes a quantitative relationship between ____ __ ___ _____ and the direct output of the intstrument (for example time/volume in GPC).
heparin
cross - linking
standards of known properties
Free Radical
47. The fatigue limit is value of applied stress below which a material will not fail no matter the number of ____ applied.
Large
cycles
free radical
Stable cells
48. The fibrous capsule surrounding a permanent implant is primarily composed of ___ cells and ____ (matrix).
cross - linking
Mast - Collagen
Positive Feedback
alloys - passivation
49. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.
cycles
angiogenesis
Stable cells
fibrinogen - factor XIII
50. 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.
Water - oxygen - metal
Water
Proteases
alloys - passivation
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