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