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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. This type of feedback creates
Chemotaxis
negative feedback
Water - oxygen - metal
Compression molding
2. ____ grafts are derived from the other humans.
Polydesperity index
Allogeneic
Bioactive
Higher
3. Cells that don't proliferate (neurons)
Permanent cells
in cytoplasm
Positive Feedback
cross - linking
4. ____ describes the ability of a device to function appropriately in the presence of blood.
Hemocompatibility
Have to be in a clean room free of dust and biocontamination - expensive
low
Proteases
5. The calculation of a polymer's molecular weight (weight average and number number average) is based upon values for ____ and ___.
Large
Number of polymers - molecular weight of polymer
Hemocompatibility
Chemotaxis
6. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.
heparin
Calibration
phagocytosis
Hemophilia
7. High conductivity - isotropic - crystalline
neutrophils - macrophages
glassy to rubbery
micromachining
Metals
8. A condensation polymerization results with an ester bond between two reactants and this comes off as a result
Water
Amide
low
binding
9. 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.
Free Radical
autologous
Regeneration/Repair
alloys - passivation
10. The fibrous capsule surrounding a permanent implant is primarily composed of ___ cells and ____ (matrix).
standards of known properties
Mast - Collagen
Hemocompatibility
phagocytosis
11. Disfunction of _____ (cells) producing collagenase during the _____ phase of wound healing may form Keloid scars.
Compression molding
Bioactive
macrophages - proliferation
Plasticizers
12. The process of calibration establishes a quantitative relationship between ____ __ ___ _____ and the direct output of the intstrument (for example time/volume in GPC).
angiogenesis
Proteases
standards of known properties
Thrombin
13. A ____ implant is designed to elicit specific - intended to host responses.
free radical
Number of polymers - molecular weight of polymer
Bioactive
Compression molding
14. This cleaves into fibrinogen which creates fibrin (a sticky enzyme that allows blood to clot)
scars
Mast - Collagen
Collagenase/Remodelling
Thrombin
15. A molecular pathway in which the product of each reaction catalyzes the subsequent reaction.
Enzyme cascade
stress
mast cells
autologous
16. Deformation that cannot be recovered once the load is removed from the material is ____ deformation.
heparin
Plastic
fibrinogen - factor XIII
Polymers - cross linking of polymers
17. Mast cells release this
Enzyme cascade
heparin
phagocytosis
Hemocompatibility
18. Resulting from the build up of too much collagen at the surface of injury during the granulation tissue stage of proliferation
photoactive polymers
scars
fibrinogen - factor XIII
Heparin
19. ____- are polymers that can be repeatedly softened by heating and hardened by cooling.
Macrophages
Heparin
Thermoplastics
hypoxin - angiogenesis
20. The two types of white blood cells:
Metals
Enzyme cascade
neutrophils - macrophages
fibrinogen - factor XIII
21. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
binding
labile cells
Phagocytosis
Proteases
22. Where are the tissue factors found when they're inactivated
hypoxin - angiogenesis
Water
in cytoplasm
Hemocompatibility
23. No healing of damage neurons is the result of ____ cells that are not able to ____.
Chemotaxis
Number of polymers - molecular weight of polymer
micromachining
Permanent - replicate
24. Polyethylene oxide grafting to biomaterials was developed to prevent coagulation by interfering with/preventing ___ ___.
Collagenase/Remodelling
Extrusion
Metals
Protein Absorption
25. ______ Molecular weight degrades slower than lower MW
autologous
Thermoplastics
Higher
Stable cells
26. What type of materials are used for photolithography? (substrate is a silicon wafer - built up material is some _____ ____ )
Thrombin
photoactive polymers
Hemocompatibility
Free Radical
27. The trigger for activation of enzymes (anything but endothelial cells!)
labile cells
Thermoplastics
Damage to cell membranes
binding
28. Cells that proliferate rapidly (fibroblasts)
labile cells
Extrusion
micromachining
Hemophilia
29. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.
Chemotaxis
stress
Compression molding
fibrinogen - factor XIII
30. Enzymes (proteins) are not activated only when they are in contact with this type of cells
Proteases
Endothelial cells
Plasticizers
Thrombin
31. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.
cross - linking
Lower
Damage to cell membranes
fibrinogen - factor XIII
32. ____ is a measurement that characterizes the breadth of the distribution of a polymer's molecular weight.
Stress
Polydesperity index
photoactive polymers
chemotaxis
33. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.
glassy to rubbery
phagocytosis
low
Enzyme cascade
34. Thrombin activates several upstream factors.
Positive Feedback
fibrinogen - factor XIII
in cytoplasm
photoactive polymers
35. During granulation stage of proliferation - growth factors that produce this ____(answer)_____ that function in degrading fibrin and replacing it with collagen.
Proteases
Large
Thermoplastics
mast cells
36. Rather than randomly moving - moves in a directed cell migration manner for specific functions.
Lower
standards of known properties
Intermolecular bonding - molecular weight
chemotaxis
37. Activates tissue factors aka endothelial damage
Metals
Positive Feedback
Damage to cell membranes
Thrombin
38. The glass transition temperature of a poymer at which a polymer transforms from a ____ state to a ___ state.
Plastic
glassy to rubbery
alloys - passivation
free radical
39. Foreign body giants cells are produced by fusion of ___.
Macrophages
Phagocytosis
Permanent - replicate
heparin
40. Process of producing new blood vessels due to a lack on oxygen and thus inducing VEGF.
Macrophages
hypoxin - angiogenesis
Thermoplastics
angiogenesis
41. Vascular endothelial growth factor is produced in response to ___ and stimulates ___.
free radical
hypoxin - angiogenesis
glassy to rubbery
cycles
42. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
alloys - passivation
Water - oxygen - metal
Protein Absorption
Compression molding
43. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.
Hemophilia
Negative Feedback
mast cells
standards of known properties
44. Which of polyermization (condensation/free radical) would you choose to obtain a polymer of high molecular weight?
stress
Metals
Number of polymers - molecular weight of polymer
Free Radical
45. Two things needed in the end product of the creation of a scab
Thrombin
Plasticizers
Extrusion
Polymers - cross linking of polymers
46. Keloid scars form due to disfunction of ____.
Proteases
Plasticizers
Intermolecular bonding - molecular weight
Collagenase/Remodelling
47. Enzyme that really gets the polmerization going!
chemotaxis
cross - linking
Number of polymers - molecular weight of polymer
Thrombin
48. List two chemical characteristics of polymers:
Intermolecular bonding - molecular weight
macrophages - proliferation
Stress
heparin
49. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.
Water
Collagenase
Amide
Negative Feedback
50. Drawback of micromaching
Extrusion
Have to be in a clean room free of dust and biocontamination - expensive
Polymers - cross linking of polymers
Hemocompatibility