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