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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. ____ is a measurement that characterizes the breadth of the distribution of a polymer's molecular weight.
Protein Absorption
Polydesperity index
glassy to rubbery
Proteases
2. Vascular endothelial growth factor is produced in response to ___ and stimulates ___.
hypoxin - angiogenesis
Thrombin
Allogeneic
Hemophilia
3. The glass transition temperature of a poymer at which a polymer transforms from a ____ state to a ___ state.
Intermolecular bonding - molecular weight
Have to be in a clean room free of dust and biocontamination - expensive
glassy to rubbery
Large
4. The process of calibration establishes a quantitative relationship between ____ __ ___ _____ and the direct output of the intstrument (for example time/volume in GPC).
macrophages - proliferation
negative feedback
standards of known properties
Plasticizers
5. Foreign body giants cells are produced by fusion of ___.
in cytoplasm
Macrophages
Calibration
free radical
6. Cells that proliferate rapidly (fibroblasts)
labile cells
Thrombin
stress
Amide
7. 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?
cross - linking
Compression molding
cycles
binding
8. Process of producing new blood vessels due to a lack on oxygen and thus inducing VEGF.
Plasticizers
neutrophils - macrophages
heparin
angiogenesis
9. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.
low
Collagenase/Remodelling
Thrombin
hypoxin - angiogenesis
10. Activates tissue factors aka endothelial damage
Water
Metals
Protein Absorption
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.
Water - oxygen - metal
stress
Proteases
Positive Feedback
12. Higher Molecular weight degrades slower than ____ MW
Lower
Phagocytosis
Stress
Intermolecular bonding - molecular weight
13. Cells that don't proliferate (neurons)
stress
Permanent cells
Thermoplastics
chemotaxis
14. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.
stress
Have to be in a clean room free of dust and biocontamination - expensive
Water
heparin
15. A molecular pathway in which the product of each reaction catalyzes the subsequent reaction.
Enzyme cascade
heparin
alloys - passivation
labile cells
16. ____ are enzymes responsible for protein degradation.
in cytoplasm
Bioactive
Proteases
Protein Absorption
17. ____- are polymers that can be repeatedly softened by heating and hardened by cooling.
Thermoplastics
Mast - Collagen
Thrombin
Number of polymers - molecular weight of polymer
18. High conductivity - isotropic - crystalline
standards of known properties
Metals
Water - oxygen - metal
negative feedback
19. Process that makes long fibers (fiber drawing) by forcing a fluid through an oriface.
Extrusion
micromachining
chemotaxis
autologous
20. 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.
Polydesperity index
autologous
Chemotaxis
Thermoplastics
21. ____ describes the ability of a device to function appropriately in the presence of blood.
autologous
macrophages - proliferation
Permanent - replicate
Hemocompatibility
22. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.
Heparin
Thermoplastics
mast cells
Enzyme cascade
23. Two things needed in the end product of the creation of a scab
Plastic
Amide
Polymers - cross linking of polymers
free radical
24. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
Stable cells
Water - oxygen - metal
Polymers - cross linking of polymers
scars
25. Which of polyermization (condensation/free radical) would you choose to obtain a polymer of high molecular weight?
Free Radical
Proteases
Polydesperity index
autologous
26. Damaged cells at the site of injury (mast cells) release ___ (glycosaminoglycan).
Permanent - replicate
Free Radical
Thrombin
heparin
27. A ____ implant is designed to elicit specific - intended to host responses.
Heparin
Bioactive
Damage to cell membranes
hypoxin - angiogenesis
28. Drawback of micromaching
Endothelial cells
Stable cells
Bioactive
Have to be in a clean room free of dust and biocontamination - expensive
29. Deformation that cannot be recovered once the load is removed from the material is ____ deformation.
Compression molding
Higher
micromachining
Plastic
30. Where are the tissue factors found when they're inactivated
in cytoplasm
Enzyme cascade
mast cells
standards of known properties
31. Type of fiber drawing that controls details of a polymer by etching on a microscopic level; thus - controlling mechanical properties as well
micromachining
Regeneration/Repair
Permanent - replicate
Mast - Collagen
32. This type of feedback creates
Amide
standards of known properties
macrophages - proliferation
negative feedback
33. Are polymer additives used to lower glass transition temperature temperature.
hypoxin - angiogenesis
Plasticizers
Proteases
Stress
34. Keloid scars forms because disfuntion of
Positive Feedback
chemotaxis
Water
Collagenase
35. Disfunction of _____ (cells) producing collagenase during the _____ phase of wound healing may form Keloid scars.
Polymers - cross linking of polymers
macrophages - proliferation
Proteases
Regeneration/Repair
36. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.
fibrinogen - factor XIII
Negative Feedback
Compression molding
glassy to rubbery
37. Collagen ____ is responsible for the gradual gain in mechanical properties of wounded tissue between roughly 4 and 52 weeks post- injury.
photoactive polymers
Amide
hypoxin - angiogenesis
cross - linking
38. Enzymes (proteins) are not activated only when they are in contact with this type of cells
Endothelial cells
Stable cells
Proteases
Water - oxygen - metal
39. _____ establishes a quantitative relationship between measured output values from an instrument and known standards of what is being measured.
scars
mast cells
Thrombin
Calibration
40. Addition polymerization is commonly initiated by ___ - atoms that have an unpaired electron.
Proteases
Water
free radical
heparin
41. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
Lower
Collagenase/Remodelling
low
Phagocytosis
42. Keloid scars form due to disfunction of ____.
Endothelial cells
alloys - passivation
Collagenase/Remodelling
Bioactive
43. The fibrous capsule surrounding a permanent implant is primarily composed of ___ cells and ____ (matrix).
Negative Feedback
Mast - Collagen
Damage to cell membranes
Enzyme cascade
44. 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
standards of known properties
Bioactive
45. Resulting from the build up of too much collagen at the surface of injury during the granulation tissue stage of proliferation
phagocytosis
scars
Large
Damage to cell membranes
46. Classify the following polymers into appropriate families based on their bond structure i.e. the polymer is an example of poly ____.
Amide
Regeneration/Repair
Mast - Collagen
Higher
47. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.
fibrinogen - factor XIII
Negative Feedback
Large
phagocytosis
48. Mast cells release this
Chemotaxis
Have to be in a clean room free of dust and biocontamination - expensive
chemotaxis
heparin
49. What type of materials are used for photolithography? (substrate is a silicon wafer - built up material is some _____ ____ )
photoactive polymers
Free Radical
Mast - Collagen
cycles
50. 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
Free Radical
phagocytosis
Thrombin