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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. High conductivity - isotropic - crystalline
Intermolecular bonding - molecular weight
Chemotaxis
Metals
labile cells
2. Keloid scars forms because disfuntion of
Enzyme cascade
heparin
Collagenase
Regeneration/Repair
3. The trigger for activation of enzymes (anything but endothelial cells!)
binding
Heparin
cycles
Calibration
4. Keloid scars form due to disfunction of ____.
Collagenase/Remodelling
Protein Absorption
neutrophils - macrophages
Mast - Collagen
5. Which of polyermization (condensation/free radical) would you choose to obtain a polymer of high molecular weight?
Bioactive
Heparin
scars
Free Radical
6. Cells that don't proliferate (neurons)
Permanent cells
Bioactive
heparin
Metals
7. This type of feedback creates
negative feedback
chemotaxis
Bioactive
Permanent - replicate
8. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.
Enzyme cascade
low
Thermoplastics
autologous
9. Activates tissue factors aka endothelial damage
Damage to cell membranes
phagocytosis
standards of known properties
Enzyme cascade
10. ____ binds to anti- thrombin III (thrombin inhibitor) and increases its potency 1000- fold.
Endothelial cells
Polymers - cross linking of polymers
Enzyme cascade
Heparin
11. Enzymes (proteins) are not activated only when they are in contact with this type of cells
Extrusion
Endothelial cells
in cytoplasm
Free Radical
12. 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.
Large
Number of polymers - molecular weight of polymer
Proteases
autologous
13. Deformation that cannot be recovered once the load is removed from the material is ____ deformation.
Plastic
Heparin
standards of known properties
Polymers - cross linking of polymers
14. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure
Plasticizers
Metals
Heparin
Stress
15. The fibrous capsule surrounding a permanent implant is primarily composed of ___ cells and ____ (matrix).
angiogenesis
autologous
Polymers - cross linking of polymers
Mast - Collagen
16. This cleaves into fibrinogen which creates fibrin (a sticky enzyme that allows blood to clot)
Plasticizers
Thrombin
Mast - Collagen
Collagenase/Remodelling
17. Polyethylene oxide grafting to biomaterials was developed to prevent coagulation by interfering with/preventing ___ ___.
Protein Absorption
Plasticizers
Higher
Phagocytosis
18. No healing of damage neurons is the result of ____ cells that are not able to ____.
photoactive polymers
Metals
Permanent - replicate
Have to be in a clean room free of dust and biocontamination - expensive
19. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.
Plastic
Plasticizers
Negative Feedback
Thrombin
20. Higher Molecular weight degrades slower than ____ MW
Lower
Allogeneic
photoactive polymers
stress
21. Process that makes long fibers (fiber drawing) by forcing a fluid through an oriface.
Extrusion
Bioactive
Chemotaxis
Metals
22. Disfunction of _____ (cells) producing collagenase during the _____ phase of wound healing may form Keloid scars.
macrophages - proliferation
Enzyme cascade
Phagocytosis
Have to be in a clean room free of dust and biocontamination - expensive
23. Where are the tissue factors found when they're inactivated
Macrophages
cycles
binding
in cytoplasm
24. Addition polymerization is commonly initiated by ___ - atoms that have an unpaired electron.
Plastic
angiogenesis
Regeneration/Repair
free radical
25. A molecular pathway in which the product of each reaction catalyzes the subsequent reaction.
Number of polymers - molecular weight of polymer
Enzyme cascade
Proteases
stress
26. Classify the following polymers into appropriate families based on their bond structure i.e. the polymer is an example of poly ____.
Metals
Negative Feedback
Amide
Phagocytosis
27. _____ establishes a quantitative relationship between measured output values from an instrument and known standards of what is being measured.
Damage to cell membranes
Large
Calibration
Compression molding
28. List two chemical characteristics of polymers:
Intermolecular bonding - molecular weight
standards of known properties
Hemocompatibility
phagocytosis
29. Cells that proliferate rapidly (fibroblasts)
labile cells
Have to be in a clean room free of dust and biocontamination - expensive
hypoxin - angiogenesis
Permanent - replicate
30. Cells that proliferate slowly over time (aka liver)
Stable cells
Higher
Amide
negative feedback
31. A condensation polymerization results with an ester bond between two reactants and this comes off as a result
Water
Collagenase/Remodelling
Permanent - replicate
Have to be in a clean room free of dust and biocontamination - expensive
32. Is directed cell migration in response to a concentration gradient of soluble molecules.
Chemotaxis
Regeneration/Repair
Higher
Thrombin
33. ____ are enzymes responsible for protein degradation.
low
phagocytosis
Proteases
Plasticizers
34. Resulting from the build up of too much collagen at the surface of injury during the granulation tissue stage of proliferation
scars
Plastic
Have to be in a clean room free of dust and biocontamination - expensive
mast cells
35. A ____ implant is designed to elicit specific - intended to host responses.
cross - linking
Water
Intermolecular bonding - molecular weight
Bioactive
36. Two things needed in the end product of the creation of a scab
micromachining
in cytoplasm
Number of polymers - molecular weight of polymer
Polymers - cross linking of polymers
37. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.
stress
Hemophilia
scars
Higher
38. Enzyme that really gets the polmerization going!
Thrombin
Chemotaxis
labile cells
cross - linking
39. Damaged cells at the site of injury (mast cells) release ___ (glycosaminoglycan).
Thrombin
heparin
Thermoplastics
free radical
40. ____ is a measurement that characterizes the breadth of the distribution of a polymer's molecular weight.
Bioactive
Polydesperity index
Calibration
low
41. Type of fiber drawing that controls details of a polymer by etching on a microscopic level; thus - controlling mechanical properties as well
cycles
Proteases
micromachining
Permanent - replicate
42. The process of calibration establishes a quantitative relationship between ____ __ ___ _____ and the direct output of the intstrument (for example time/volume in GPC).
cross - linking
standards of known properties
Calibration
alloys - passivation
43. Are polymer additives used to lower glass transition temperature temperature.
scars
Bioactive
Lower
Plasticizers
44. Foreign body giants cells are produced by fusion of ___.
Lower
Macrophages
Extrusion
Intermolecular bonding - molecular weight
45. What types of wound healing results from injury with inflammation?
Positive Feedback
Regeneration/Repair
cycles
Damage to cell membranes
46. Condition in which patients can literally bleed to death.
Hemophilia
Calibration
Permanent cells
Thermoplastics
47. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
macrophages - proliferation
photoactive polymers
chemotaxis
Water - oxygen - metal
48. During granulation stage of proliferation - growth factors that produce this ____(answer)_____ that function in degrading fibrin and replacing it with collagen.
Mast - Collagen
Proteases
micromachining
Bioactive
49. 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.
Intermolecular bonding - molecular weight
Endothelial cells
Macrophages
alloys - passivation
50. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
Permanent cells
Phagocytosis
macrophages - proliferation
Mast - Collagen