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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 _____ ____ )
Chemotaxis
Large
photoactive polymers
hypoxin - angiogenesis
2. Rather than randomly moving - moves in a directed cell migration manner for specific functions.
Water
Collagenase/Remodelling
chemotaxis
Number of polymers - molecular weight of polymer
3. Keloid scars forms because disfuntion of
Collagenase
heparin
Permanent - replicate
Macrophages
4. The fibrous capsule surrounding a permanent implant is primarily composed of ___ cells and ____ (matrix).
angiogenesis
Stable cells
Hemocompatibility
Mast - Collagen
5. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.
Number of polymers - molecular weight of polymer
Positive Feedback
Mast - Collagen
low
6. Vascular endothelial growth factor is produced in response to ___ and stimulates ___.
hypoxin - angiogenesis
Polymers - cross linking of polymers
standards of known properties
Extrusion
7. Type of fiber drawing that controls details of a polymer by etching on a microscopic level; thus - controlling mechanical properties as well
low
mast cells
Thermoplastics
micromachining
8. High conductivity - isotropic - crystalline
Have to be in a clean room free of dust and biocontamination - expensive
Metals
Amide
scars
9. Cells that proliferate rapidly (fibroblasts)
Plasticizers
autologous
Compression molding
labile cells
10. 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
Permanent - replicate
scars
Hemophilia
11. Process of producing new blood vessels due to a lack on oxygen and thus inducing VEGF.
angiogenesis
Thrombin
Water
Enzyme cascade
12. ____ are enzymes responsible for protein degradation.
Proteases
scars
Extrusion
photoactive polymers
13. Enzyme that really gets the polmerization going!
binding
Thrombin
phagocytosis
in cytoplasm
14. _____ establishes a quantitative relationship between measured output values from an instrument and known standards of what is being measured.
Proteases
neutrophils - macrophages
Have to be in a clean room free of dust and biocontamination - expensive
Calibration
15. Higher Molecular weight degrades slower than ____ MW
low
Plasticizers
Lower
Higher
16. Is directed cell migration in response to a concentration gradient of soluble molecules.
hypoxin - angiogenesis
alloys - passivation
Compression molding
Chemotaxis
17. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.
fibrinogen - factor XIII
labile cells
Damage to cell membranes
micromachining
18. The two types of white blood cells:
Hemocompatibility
Water
binding
neutrophils - macrophages
19. Cells that proliferate slowly over time (aka liver)
low
fibrinogen - factor XIII
Stable cells
Water
20. ______ Molecular weight degrades slower than lower MW
Higher
low
Polymers - cross linking of polymers
Polydesperity index
21. ____ grafts are derived from the other humans.
Allogeneic
Free Radical
chemotaxis
Proteases
22. Process that makes long fibers (fiber drawing) by forcing a fluid through an oriface.
Collagenase
Endothelial cells
Extrusion
Collagenase/Remodelling
23. Foreign body giants cells are produced by fusion of ___.
Proteases
free radical
Macrophages
Water
24. The trigger for activation of enzymes (anything but endothelial cells!)
binding
micromachining
Bioactive
Polymers - cross linking of polymers
25. Where are the tissue factors found when they're inactivated
scars
neutrophils - macrophages
Water - oxygen - metal
in cytoplasm
26. Polyethylene oxide grafting to biomaterials was developed to prevent coagulation by interfering with/preventing ___ ___.
cross - linking
Stress
Protein Absorption
in cytoplasm
27. The calculation of a polymer's molecular weight (weight average and number number average) is based upon values for ____ and ___.
autologous
heparin
Number of polymers - molecular weight of polymer
alloys - passivation
28. Damaged cells at the site of injury (mast cells) release ___ (glycosaminoglycan).
heparin
Proteases
Protein Absorption
labile cells
29. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.
stress
Calibration
binding
Protein Absorption
30. Drawback of micromaching
Proteases
Thrombin
Regeneration/Repair
Have to be in a clean room free of dust and biocontamination - expensive
31. 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.
Positive Feedback
Large
Thrombin
Amide
32. Two things needed in the end product of the creation of a scab
Collagenase/Remodelling
autologous
neutrophils - macrophages
Polymers - cross linking of polymers
33. ____- are polymers that can be repeatedly softened by heating and hardened by cooling.
in cytoplasm
Damage to cell membranes
binding
Thermoplastics
34. Condition in which patients can literally bleed to death.
Allogeneic
low
Hemophilia
neutrophils - macrophages
35. Mast cells release this
labile cells
Damage to cell membranes
Plastic
heparin
36. Resulting from the build up of too much collagen at the surface of injury during the granulation tissue stage of proliferation
scars
Polymers - cross linking of polymers
Mast - Collagen
micromachining
37. ____ describes the ability of a device to function appropriately in the presence of blood.
scars
macrophages - proliferation
Hemocompatibility
Collagenase
38. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure
Mast - Collagen
Extrusion
Polymers - cross linking of polymers
Stress
39. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.
Heparin
angiogenesis
phagocytosis
negative feedback
40. Which of polyermization (condensation/free radical) would you choose to obtain a polymer of high molecular weight?
alloys - passivation
Free Radical
neutrophils - macrophages
in cytoplasm
41. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
Phagocytosis
Enzyme cascade
Regeneration/Repair
Have to be in a clean room free of dust and biocontamination - expensive
42. List two chemical characteristics of polymers:
autologous
Intermolecular bonding - molecular weight
fibrinogen - factor XIII
Negative Feedback
43. A ____ implant is designed to elicit specific - intended to host responses.
scars
heparin
Allogeneic
Bioactive
44. This cleaves into fibrinogen which creates fibrin (a sticky enzyme that allows blood to clot)
Have to be in a clean room free of dust and biocontamination - expensive
Thrombin
mast cells
Large
45. This type of feedback creates
negative feedback
fibrinogen - factor XIII
Collagenase/Remodelling
Thermoplastics
46. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.
Mast - Collagen
angiogenesis
Negative Feedback
binding
47. During granulation stage of proliferation - growth factors that produce this ____(answer)_____ that function in degrading fibrin and replacing it with collagen.
Thrombin
Have to be in a clean room free of dust and biocontamination - expensive
Proteases
Protein Absorption
48. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
Regeneration/Repair
Polymers - cross linking of polymers
Water - oxygen - metal
Thrombin
49. The fatigue limit is value of applied stress below which a material will not fail no matter the number of ____ applied.
binding
Permanent - replicate
Calibration
cycles
50. Collagen ____ is responsible for the gradual gain in mechanical properties of wounded tissue between roughly 4 and 52 weeks post- injury.
Lower
Phagocytosis
cross - linking
Heparin