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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. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
Extrusion
cross - linking
stress
Water - oxygen - metal
2. What type of materials are used for photolithography? (substrate is a silicon wafer - built up material is some _____ ____ )
Negative Feedback
Polymers - cross linking of polymers
photoactive polymers
Intermolecular bonding - molecular weight
3. A molecular pathway in which the product of each reaction catalyzes the subsequent reaction.
Regeneration/Repair
Enzyme cascade
Negative Feedback
Number of polymers - molecular weight of polymer
4. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
in cytoplasm
Phagocytosis
Polydesperity index
Permanent cells
5. ____ binds to anti- thrombin III (thrombin inhibitor) and increases its potency 1000- fold.
angiogenesis
micromachining
Heparin
Calibration
6. ____ describes the ability of a device to function appropriately in the presence of blood.
heparin
Thrombin
Permanent - replicate
Hemocompatibility
7. Thrombin activates several upstream factors.
Hemophilia
Plastic
Positive Feedback
Stable cells
8. Deformation that cannot be recovered once the load is removed from the material is ____ deformation.
cross - linking
Plastic
Endothelial cells
heparin
9. Collagen ____ is responsible for the gradual gain in mechanical properties of wounded tissue between roughly 4 and 52 weeks post- injury.
Heparin
Metals
cross - linking
Amide
10. 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?
mast cells
Polymers - cross linking of polymers
Compression molding
cross - linking
11. The two types of white blood cells:
mast cells
neutrophils - macrophages
Extrusion
Stable cells
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.
Mast - Collagen
Water - oxygen - metal
Free Radical
Large
13. Activates tissue factors aka endothelial damage
neutrophils - macrophages
Plasticizers
Damage to cell membranes
micromachining
14. Which of polyermization (condensation/free radical) would you choose to obtain a polymer of high molecular weight?
Hemocompatibility
Calibration
Water
Free Radical
15. ____ are enzymes responsible for protein degradation.
glassy to rubbery
Proteases
Water - oxygen - metal
angiogenesis
16. The process of calibration establishes a quantitative relationship between ____ __ ___ _____ and the direct output of the intstrument (for example time/volume in GPC).
Enzyme cascade
glassy to rubbery
negative feedback
standards of known properties
17. What types of wound healing results from injury with inflammation?
macrophages - proliferation
Regeneration/Repair
heparin
Negative Feedback
18. The fibrous capsule surrounding a permanent implant is primarily composed of ___ cells and ____ (matrix).
Water
Mast - Collagen
Thrombin
micromachining
19. Addition polymerization is commonly initiated by ___ - atoms that have an unpaired electron.
Proteases
Mast - Collagen
free radical
Plasticizers
20. Cells that don't proliferate (neurons)
Thrombin
Permanent cells
Chemotaxis
Thermoplastics
21. The glass transition temperature of a poymer at which a polymer transforms from a ____ state to a ___ state.
Permanent - replicate
glassy to rubbery
Mast - Collagen
photoactive polymers
22. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure
Higher
Endothelial cells
Stress
mast cells
23. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.
Number of polymers - molecular weight of polymer
Negative Feedback
Water
Collagenase
24. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.
in cytoplasm
cycles
mast cells
Polymers - cross linking of polymers
25. 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.
Free Radical
alloys - passivation
stress
chemotaxis
26. Foreign body giants cells are produced by fusion of ___.
heparin
free radical
Macrophages
micromachining
27. Process of producing new blood vessels due to a lack on oxygen and thus inducing VEGF.
Water - oxygen - metal
cross - linking
angiogenesis
Number of polymers - molecular weight of polymer
28. Enzyme that really gets the polmerization going!
Thrombin
cycles
Extrusion
Calibration
29. Polyethylene oxide grafting to biomaterials was developed to prevent coagulation by interfering with/preventing ___ ___.
fibrinogen - factor XIII
Protein Absorption
autologous
chemotaxis
30. This type of feedback creates
low
in cytoplasm
standards of known properties
negative feedback
31. ____ grafts are derived from the other humans.
Phagocytosis
neutrophils - macrophages
Allogeneic
Intermolecular bonding - molecular weight
32. No healing of damage neurons is the result of ____ cells that are not able to ____.
Intermolecular bonding - molecular weight
Negative Feedback
Permanent cells
Permanent - replicate
33. A condensation polymerization results with an ester bond between two reactants and this comes off as a result
Water
Plastic
Extrusion
scars
34. The fatigue limit is value of applied stress below which a material will not fail no matter the number of ____ applied.
Hemocompatibility
Permanent cells
phagocytosis
cycles
35. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.
Large
Heparin
fibrinogen - factor XIII
Negative Feedback
36. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.
Enzyme cascade
Large
binding
low
37. Enzymes (proteins) are not activated only when they are in contact with this type of cells
mast cells
Endothelial cells
micromachining
Permanent - replicate
38. Cells that proliferate slowly over time (aka liver)
Heparin
Stable cells
Polydesperity index
Damage to cell membranes
39. Keloid scars forms because disfuntion of
Permanent - replicate
Collagenase
angiogenesis
alloys - passivation
40. The trigger for activation of enzymes (anything but endothelial cells!)
phagocytosis
binding
Allogeneic
Permanent cells
41. A ____ implant is designed to elicit specific - intended to host responses.
Thrombin
Mast - Collagen
Bioactive
neutrophils - macrophages
42. ____- are polymers that can be repeatedly softened by heating and hardened by cooling.
Thermoplastics
hypoxin - angiogenesis
Higher
angiogenesis
43. Damaged cells at the site of injury (mast cells) release ___ (glycosaminoglycan).
heparin
Hemophilia
Macrophages
Extrusion
44. Condition in which patients can literally bleed to death.
Hemophilia
Phagocytosis
phagocytosis
cross - linking
45. Disfunction of _____ (cells) producing collagenase during the _____ phase of wound healing may form Keloid scars.
Protein Absorption
Calibration
labile cells
macrophages - proliferation
46. High conductivity - isotropic - crystalline
heparin
Metals
cross - linking
Number of polymers - molecular weight of polymer
47. Mast cells release this
Free Radical
neutrophils - macrophages
Have to be in a clean room free of dust and biocontamination - expensive
heparin
48. Vascular endothelial growth factor is produced in response to ___ and stimulates ___.
Intermolecular bonding - molecular weight
hypoxin - angiogenesis
Water - oxygen - metal
Positive Feedback
49. Where are the tissue factors found when they're inactivated
Have to be in a clean room free of dust and biocontamination - expensive
Higher
Collagenase
in cytoplasm
50. This cleaves into fibrinogen which creates fibrin (a sticky enzyme that allows blood to clot)
Mast - Collagen
micromachining
Thrombin
Higher