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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. 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.
Proteases
neutrophils - macrophages
Water
Large
2. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
cycles
Proteases
Hemocompatibility
Phagocytosis
3. Rather than randomly moving - moves in a directed cell migration manner for specific functions.
cross - linking
in cytoplasm
Lower
chemotaxis
4. Enzymes (proteins) are not activated only when they are in contact with this type of cells
Endothelial cells
Proteases
micromachining
Extrusion
5. 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.
stress
alloys - passivation
Large
Collagenase/Remodelling
6. _____ establishes a quantitative relationship between measured output values from an instrument and known standards of what is being measured.
Negative Feedback
Calibration
Permanent cells
Water
7. Foreign body giants cells are produced by fusion of ___.
Macrophages
Free Radical
Collagenase/Remodelling
fibrinogen - factor XIII
8. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.
Plastic
fibrinogen - factor XIII
Hemocompatibility
heparin
9. ____ grafts are derived from the other humans.
Phagocytosis
Allogeneic
autologous
in cytoplasm
10. Drawback of micromaching
Heparin
Number of polymers - molecular weight of polymer
Plasticizers
Have to be in a clean room free of dust and biocontamination - expensive
11. The glass transition temperature of a poymer at which a polymer transforms from a ____ state to a ___ state.
Regeneration/Repair
glassy to rubbery
Permanent cells
Thrombin
12. A condensation polymerization results with an ester bond between two reactants and this comes off as a result
Number of polymers - molecular weight of polymer
glassy to rubbery
free radical
Water
13. Type of fiber drawing that controls details of a polymer by etching on a microscopic level; thus - controlling mechanical properties as well
micromachining
Negative Feedback
Protein Absorption
Allogeneic
14. The two types of white blood cells:
labile cells
Heparin
neutrophils - macrophages
micromachining
15. Thrombin activates several upstream factors.
Positive Feedback
Number of polymers - molecular weight of polymer
Stable cells
Endothelial cells
16. 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.
Endothelial cells
heparin
autologous
Free Radical
17. The calculation of a polymer's molecular weight (weight average and number number average) is based upon values for ____ and ___.
Allogeneic
scars
Stress
Number of polymers - molecular weight of polymer
18. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.
photoactive polymers
Amide
stress
phagocytosis
19. This cleaves into fibrinogen which creates fibrin (a sticky enzyme that allows blood to clot)
Thrombin
cross - linking
Water
heparin
20. No healing of damage neurons is the result of ____ cells that are not able to ____.
angiogenesis
Intermolecular bonding - molecular weight
Permanent - replicate
Collagenase
21. Disfunction of _____ (cells) producing collagenase during the _____ phase of wound healing may form Keloid scars.
in cytoplasm
macrophages - proliferation
Phagocytosis
Positive Feedback
22. Vascular endothelial growth factor is produced in response to ___ and stimulates ___.
labile cells
Lower
hypoxin - angiogenesis
heparin
23. Activates tissue factors aka endothelial damage
Free Radical
alloys - passivation
Damage to cell membranes
Endothelial cells
24. What types of wound healing results from injury with inflammation?
negative feedback
Allogeneic
low
Regeneration/Repair
25. Mast cells release this
micromachining
heparin
photoactive polymers
Polydesperity index
26. Keloid scars forms because disfuntion of
cycles
Bioactive
Collagenase
chemotaxis
27. Cells that proliferate slowly over time (aka liver)
Water
Stable cells
alloys - passivation
Polymers - cross linking of polymers
28. Enzyme that really gets the polmerization going!
Thrombin
photoactive polymers
Hemophilia
Proteases
29. The fatigue limit is value of applied stress below which a material will not fail no matter the number of ____ applied.
cycles
angiogenesis
Intermolecular bonding - molecular weight
heparin
30. List two chemical characteristics of polymers:
Negative Feedback
autologous
macrophages - proliferation
Intermolecular bonding - molecular weight
31. Damaged cells at the site of injury (mast cells) release ___ (glycosaminoglycan).
Bioactive
Collagenase
Calibration
heparin
32. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
Water - oxygen - metal
Regeneration/Repair
Positive Feedback
Stress
33. High conductivity - isotropic - crystalline
Metals
scars
Thrombin
Proteases
34. ____ binds to anti- thrombin III (thrombin inhibitor) and increases its potency 1000- fold.
Collagenase
binding
Heparin
Proteases
35. The process of calibration establishes a quantitative relationship between ____ __ ___ _____ and the direct output of the intstrument (for example time/volume in GPC).
Stable cells
hypoxin - angiogenesis
standards of known properties
Chemotaxis
36. Keloid scars form due to disfunction of ____.
Collagenase/Remodelling
scars
low
Hemophilia
37. Higher Molecular weight degrades slower than ____ MW
Negative Feedback
Higher
Lower
Heparin
38. This type of feedback creates
Hemophilia
Damage to cell membranes
Permanent - replicate
negative feedback
39. Two things needed in the end product of the creation of a scab
Polymers - cross linking of polymers
Large
phagocytosis
Lower
40. Where are the tissue factors found when they're inactivated
cycles
scars
in cytoplasm
Polydesperity index
41. 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?
Endothelial cells
Hemophilia
Compression molding
Bioactive
42. ____ is a measurement that characterizes the breadth of the distribution of a polymer's molecular weight.
Polydesperity index
Lower
cycles
Higher
43. Is directed cell migration in response to a concentration gradient of soluble molecules.
Chemotaxis
Bioactive
negative feedback
cross - linking
44. ____ describes the ability of a device to function appropriately in the presence of blood.
Allogeneic
Hemocompatibility
Polymers - cross linking of polymers
Water
45. ______ Molecular weight degrades slower than lower MW
chemotaxis
autologous
Mast - Collagen
Higher
46. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.
Lower
Negative Feedback
Compression molding
Phagocytosis
47. Process that makes long fibers (fiber drawing) by forcing a fluid through an oriface.
Large
Permanent cells
binding
Extrusion
48. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.
Polydesperity index
Intermolecular bonding - molecular weight
phagocytosis
low
49. A ____ implant is designed to elicit specific - intended to host responses.
phagocytosis
labile cells
free radical
Bioactive
50. What type of materials are used for photolithography? (substrate is a silicon wafer - built up material is some _____ ____ )
Stress
Stable cells
photoactive polymers
Polymers - cross linking of polymers