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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
Thrombin
Have to be in a clean room free of dust and biocontamination - expensive
neutrophils - macrophages
negative feedback
2. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.
fibrinogen - factor XIII
hypoxin - angiogenesis
Phagocytosis
cycles
3. ____ describes the ability of a device to function appropriately in the presence of blood.
glassy to rubbery
Compression molding
Hemocompatibility
Proteases
4. Process that makes long fibers (fiber drawing) by forcing a fluid through an oriface.
Water
Extrusion
Compression molding
Free Radical
5. Cells that proliferate rapidly (fibroblasts)
labile cells
stress
neutrophils - macrophages
Proteases
6. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.
Water
Negative Feedback
heparin
labile cells
7. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
Negative Feedback
standards of known properties
low
Phagocytosis
8. ____ are enzymes responsible for protein degradation.
Higher
Proteases
Stress
Heparin
9. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.
angiogenesis
Water
Free Radical
low
10. Disfunction of _____ (cells) producing collagenase during the _____ phase of wound healing may form Keloid scars.
micromachining
Permanent cells
Bioactive
macrophages - proliferation
11. The glass transition temperature of a poymer at which a polymer transforms from a ____ state to a ___ state.
Large
glassy to rubbery
negative feedback
Compression molding
12. Deformation that cannot be recovered once the load is removed from the material is ____ deformation.
Plastic
Thermoplastics
Compression molding
autologous
13. Type of fiber drawing that controls details of a polymer by etching on a microscopic level; thus - controlling mechanical properties as well
Number of polymers - molecular weight of polymer
Allogeneic
Collagenase
micromachining
14. What type of materials are used for photolithography? (substrate is a silicon wafer - built up material is some _____ ____ )
Positive Feedback
photoactive polymers
Hemocompatibility
Thermoplastics
15. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure
Polymers - cross linking of polymers
Hemocompatibility
Have to be in a clean room free of dust and biocontamination - expensive
Stress
16. ____ grafts are derived from the other humans.
Calibration
Amide
mast cells
Allogeneic
17. High conductivity - isotropic - crystalline
Plasticizers
micromachining
Metals
Water
18. The fibrous capsule surrounding a permanent implant is primarily composed of ___ cells and ____ (matrix).
Mast - Collagen
Polymers - cross linking of polymers
cross - linking
Regeneration/Repair
19. Foreign body giants cells are produced by fusion of ___.
Macrophages
Calibration
Positive Feedback
Thermoplastics
20. No healing of damage neurons is the result of ____ cells that are not able to ____.
Permanent - replicate
cross - linking
macrophages - proliferation
Polymers - cross linking of polymers
21. ____- are polymers that can be repeatedly softened by heating and hardened by cooling.
Proteases
cycles
neutrophils - macrophages
Thermoplastics
22. ______ Molecular weight degrades slower than lower MW
Number of polymers - molecular weight of polymer
in cytoplasm
Higher
Water - oxygen - metal
23. _____ establishes a quantitative relationship between measured output values from an instrument and known standards of what is being measured.
Hemocompatibility
Calibration
Thrombin
Stress
24. Which of polyermization (condensation/free radical) would you choose to obtain a polymer of high molecular weight?
Free Radical
alloys - passivation
negative feedback
Polydesperity index
25. Where are the tissue factors found when they're inactivated
Thrombin
autologous
in cytoplasm
alloys - passivation
26. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.
Plastic
Lower
fibrinogen - factor XIII
phagocytosis
27. The calculation of a polymer's molecular weight (weight average and number number average) is based upon values for ____ and ___.
Higher
Compression molding
Number of polymers - molecular weight of polymer
stress
28. ____ is a measurement that characterizes the breadth of the distribution of a polymer's molecular weight.
low
Polydesperity index
cross - linking
autologous
29. Addition polymerization is commonly initiated by ___ - atoms that have an unpaired electron.
glassy to rubbery
Higher
free radical
stress
30. 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.
low
photoactive polymers
macrophages - proliferation
Large
31. Polyethylene oxide grafting to biomaterials was developed to prevent coagulation by interfering with/preventing ___ ___.
Protein Absorption
alloys - passivation
stress
Plasticizers
32. Mast cells release this
Number of polymers - molecular weight of polymer
photoactive polymers
heparin
Stable cells
33. Condition in which patients can literally bleed to death.
Have to be in a clean room free of dust and biocontamination - expensive
Hemophilia
binding
Thrombin
34. Enzymes (proteins) are not activated only when they are in contact with this type of cells
Thermoplastics
mast cells
Polydesperity index
Endothelial cells
35. Resulting from the build up of too much collagen at the surface of injury during the granulation tissue stage of proliferation
Mast - Collagen
Plastic
Permanent - replicate
scars
36. Are polymer additives used to lower glass transition temperature temperature.
neutrophils - macrophages
Proteases
Number of polymers - molecular weight of polymer
Plasticizers
37. The process of calibration establishes a quantitative relationship between ____ __ ___ _____ and the direct output of the intstrument (for example time/volume in GPC).
binding
standards of known properties
Number of polymers - molecular weight of polymer
scars
38. ____ binds to anti- thrombin III (thrombin inhibitor) and increases its potency 1000- fold.
Heparin
stress
Protein Absorption
Amide
39. This cleaves into fibrinogen which creates fibrin (a sticky enzyme that allows blood to clot)
Higher
chemotaxis
glassy to rubbery
Thrombin
40. 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?
Free Radical
Protein Absorption
Compression molding
Enzyme cascade
41. 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.
autologous
chemotaxis
Protein Absorption
Chemotaxis
42. Damaged cells at the site of injury (mast cells) release ___ (glycosaminoglycan).
Polydesperity index
Thrombin
Polymers - cross linking of polymers
heparin
43. A condensation polymerization results with an ester bond between two reactants and this comes off as a result
fibrinogen - factor XIII
Water
binding
autologous
44. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
Water
phagocytosis
heparin
Water - oxygen - metal
45. The two types of white blood cells:
mast cells
fibrinogen - factor XIII
neutrophils - macrophages
alloys - passivation
46. What types of wound healing results from injury with inflammation?
Regeneration/Repair
photoactive polymers
alloys - passivation
binding
47. Keloid scars forms because disfuntion of
Proteases
low
Phagocytosis
Collagenase
48. Is directed cell migration in response to a concentration gradient of soluble molecules.
glassy to rubbery
Extrusion
Chemotaxis
Number of polymers - molecular weight of polymer
49. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.
Permanent - replicate
Positive Feedback
Negative Feedback
mast cells
50. List two chemical characteristics of polymers:
Plastic
Intermolecular bonding - molecular weight
chemotaxis
Free Radical