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