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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.
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. What type of materials are used for photolithography? (substrate is a silicon wafer - built up material is some _____ ____ )
low
Negative Feedback
photoactive polymers
Proteases
2. 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
micromachining
Number of polymers - molecular weight of polymer
Extrusion
3. ____ describes the ability of a device to function appropriately in the presence of blood.
Hemocompatibility
Calibration
chemotaxis
stress
4. Type of fiber drawing that controls details of a polymer by etching on a microscopic level; thus - controlling mechanical properties as well
Collagenase/Remodelling
Intermolecular bonding - molecular weight
alloys - passivation
micromachining
5. Mast cells release this
Chemotaxis
photoactive polymers
micromachining
heparin
6. Drawback of micromaching
fibrinogen - factor XIII
in cytoplasm
binding
Have to be in a clean room free of dust and biocontamination - expensive
7. Process that makes long fibers (fiber drawing) by forcing a fluid through an oriface.
Plastic
negative feedback
Extrusion
Endothelial cells
8. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.
negative feedback
Positive Feedback
mast cells
Calibration
9. The fatigue limit is value of applied stress below which a material will not fail no matter the number of ____ applied.
Polymers - cross linking of polymers
photoactive polymers
cycles
Chemotaxis
10. Process of producing new blood vessels due to a lack on oxygen and thus inducing VEGF.
Calibration
stress
angiogenesis
Damage to cell membranes
11. During granulation stage of proliferation - growth factors that produce this ____(answer)_____ that function in degrading fibrin and replacing it with collagen.
Proteases
alloys - passivation
Collagenase/Remodelling
Water
12. ____ grafts are derived from the other humans.
alloys - passivation
Allogeneic
Collagenase/Remodelling
scars
13. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.
Amide
Thermoplastics
phagocytosis
Water - oxygen - metal
14. Collagen ____ is responsible for the gradual gain in mechanical properties of wounded tissue between roughly 4 and 52 weeks post- injury.
Plasticizers
free radical
cross - linking
Large
15. List two chemical characteristics of polymers:
Intermolecular bonding - molecular weight
heparin
mast cells
Hemophilia
16. Which of polyermization (condensation/free radical) would you choose to obtain a polymer of high molecular weight?
Permanent - replicate
phagocytosis
Protein Absorption
Free Radical
17. Cells that don't proliferate (neurons)
Stable cells
autologous
Damage to cell membranes
Permanent cells
18. The trigger for activation of enzymes (anything but endothelial cells!)
binding
Thermoplastics
stress
heparin
19. Activates tissue factors aka endothelial damage
Thermoplastics
mast cells
labile cells
Damage to cell membranes
20. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.
chemotaxis
negative feedback
fibrinogen - factor XIII
low
21. This type of feedback creates
Number of polymers - molecular weight of polymer
macrophages - proliferation
negative feedback
Regeneration/Repair
22. A molecular pathway in which the product of each reaction catalyzes the subsequent reaction.
phagocytosis
Enzyme cascade
Hemophilia
negative feedback
23. Thrombin activates several upstream factors.
mast cells
alloys - passivation
Water
Positive Feedback
24. Is directed cell migration in response to a concentration gradient of soluble molecules.
Chemotaxis
Bioactive
stress
Collagenase/Remodelling
25. 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?
neutrophils - macrophages
Compression molding
Amide
stress
26. This cleaves into fibrinogen which creates fibrin (a sticky enzyme that allows blood to clot)
glassy to rubbery
Thrombin
stress
photoactive polymers
27. Cells that proliferate slowly over time (aka liver)
Thrombin
Collagenase/Remodelling
Allogeneic
Stable cells
28. Condition in which patients can literally bleed to death.
Plastic
chemotaxis
Hemophilia
Lower
29. The process of calibration establishes a quantitative relationship between ____ __ ___ _____ and the direct output of the intstrument (for example time/volume in GPC).
Have to be in a clean room free of dust and biocontamination - expensive
Hemophilia
Permanent - replicate
standards of known properties
30. Enzymes (proteins) are not activated only when they are in contact with this type of cells
in cytoplasm
angiogenesis
Endothelial cells
Mast - Collagen
31. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure
Collagenase/Remodelling
Stress
angiogenesis
Proteases
32. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
Plastic
free radical
Higher
Phagocytosis
33. Keloid scars forms because disfuntion of
Collagenase
Hemocompatibility
scars
Intermolecular bonding - molecular weight
34. No healing of damage neurons is the result of ____ cells that are not able to ____.
Permanent - replicate
Metals
heparin
negative feedback
35. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.
Number of polymers - molecular weight of polymer
Negative Feedback
fibrinogen - factor XIII
Have to be in a clean room free of dust and biocontamination - expensive
36. The glass transition temperature of a poymer at which a polymer transforms from a ____ state to a ___ state.
glassy to rubbery
Thrombin
Proteases
Protein Absorption
37. 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.
Permanent - replicate
standards of known properties
Large
Chemotaxis
38. Addition polymerization is commonly initiated by ___ - atoms that have an unpaired electron.
hypoxin - angiogenesis
Damage to cell membranes
Enzyme cascade
free radical
39. Where are the tissue factors found when they're inactivated
Enzyme cascade
mast cells
Positive Feedback
in cytoplasm
40. Foreign body giants cells are produced by fusion of ___.
glassy to rubbery
Macrophages
Metals
Positive Feedback
41. Two things needed in the end product of the creation of a scab
Water - oxygen - metal
Water
alloys - passivation
Polymers - cross linking of polymers
42. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
Regeneration/Repair
Water - oxygen - metal
Free Radical
Damage to cell membranes
43. Enzyme that really gets the polmerization going!
Calibration
standards of known properties
Thrombin
Large
44. High conductivity - isotropic - crystalline
Permanent - replicate
stress
chemotaxis
Metals
45. Rather than randomly moving - moves in a directed cell migration manner for specific functions.
Enzyme cascade
angiogenesis
Allogeneic
chemotaxis
46. A ____ implant is designed to elicit specific - intended to host responses.
Stress
Bioactive
Collagenase/Remodelling
cross - linking
47. What types of wound healing results from injury with inflammation?
angiogenesis
Regeneration/Repair
stress
heparin
48. Are polymer additives used to lower glass transition temperature temperature.
binding
Plasticizers
Thrombin
glassy to rubbery
49. Keloid scars form due to disfunction of ____.
Regeneration/Repair
Collagenase/Remodelling
cross - linking
Permanent - replicate
50. Vascular endothelial growth factor is produced in response to ___ and stimulates ___.
Intermolecular bonding - molecular weight
hypoxin - angiogenesis
Plasticizers
Endothelial cells
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