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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. Keloid scars forms because disfuntion of
Mast - Collagen
Collagenase
macrophages - proliferation
Bioactive
2. ____- are polymers that can be repeatedly softened by heating and hardened by cooling.
photoactive polymers
Permanent cells
Thermoplastics
mast cells
3. Condition in which patients can literally bleed to death.
alloys - passivation
scars
Hemophilia
in cytoplasm
4. ______ Molecular weight degrades slower than lower MW
Regeneration/Repair
Higher
Thrombin
Amide
5. High conductivity - isotropic - crystalline
Metals
hypoxin - angiogenesis
Allogeneic
Thrombin
6. The fatigue limit is value of applied stress below which a material will not fail no matter the number of ____ applied.
Higher
cycles
Hemophilia
cross - linking
7. Keloid scars form due to disfunction of ____.
negative feedback
Negative Feedback
Collagenase/Remodelling
Free Radical
8. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.
Negative Feedback
mast cells
Polydesperity index
labile cells
9. 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
Bioactive
phagocytosis
Plasticizers
10. Collagen ____ is responsible for the gradual gain in mechanical properties of wounded tissue between roughly 4 and 52 weeks post- injury.
cross - linking
Polymers - cross linking of polymers
Phagocytosis
fibrinogen - factor XIII
11. A condensation polymerization results with an ester bond between two reactants and this comes off as a result
scars
Allogeneic
Water
Higher
12. The glass transition temperature of a poymer at which a polymer transforms from a ____ state to a ___ state.
Plasticizers
glassy to rubbery
Amide
fibrinogen - factor XIII
13. Cells that proliferate rapidly (fibroblasts)
labile cells
Mast - Collagen
alloys - passivation
micromachining
14. During granulation stage of proliferation - growth factors that produce this ____(answer)_____ that function in degrading fibrin and replacing it with collagen.
Water
Metals
Polydesperity index
Proteases
15. ____ are enzymes responsible for protein degradation.
Amide
Proteases
labile cells
Calibration
16. The trigger for activation of enzymes (anything but endothelial cells!)
Amide
Thrombin
negative feedback
binding
17. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
Stable cells
Phagocytosis
Polydesperity index
Allogeneic
18. Resulting from the build up of too much collagen at the surface of injury during the granulation tissue stage of proliferation
Mast - Collagen
Metals
in cytoplasm
scars
19. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.
stress
low
Heparin
chemotaxis
20. Enzyme that really gets the polmerization going!
binding
Metals
Thrombin
hypoxin - angiogenesis
21. Damaged cells at the site of injury (mast cells) release ___ (glycosaminoglycan).
Negative Feedback
Thrombin
heparin
Polydesperity index
22. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.
labile cells
Allogeneic
Thrombin
Negative Feedback
23. ____ describes the ability of a device to function appropriately in the presence of blood.
Metals
Hemophilia
Hemocompatibility
low
24. What types of wound healing results from injury with inflammation?
scars
Regeneration/Repair
neutrophils - macrophages
Thermoplastics
25. The two types of white blood cells:
Proteases
Plastic
neutrophils - macrophages
Phagocytosis
26. Classify the following polymers into appropriate families based on their bond structure i.e. the polymer is an example of poly ____.
Amide
standards of known properties
Thrombin
fibrinogen - factor XIII
27. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
Water - oxygen - metal
angiogenesis
Permanent cells
Intermolecular bonding - molecular weight
28. Cells that proliferate slowly over time (aka liver)
Phagocytosis
hypoxin - angiogenesis
free radical
Stable cells
29. Type of fiber drawing that controls details of a polymer by etching on a microscopic level; thus - controlling mechanical properties as well
Bioactive
micromachining
Free Radical
Macrophages
30. Process that makes long fibers (fiber drawing) by forcing a fluid through an oriface.
Negative Feedback
Endothelial cells
Calibration
Extrusion
31. Activates tissue factors aka endothelial damage
Damage to cell membranes
Polymers - cross linking of polymers
Hemocompatibility
photoactive polymers
32. _____ establishes a quantitative relationship between measured output values from an instrument and known standards of what is being measured.
Calibration
Mast - Collagen
micromachining
scars
33. ____ is a measurement that characterizes the breadth of the distribution of a polymer's molecular weight.
Polydesperity index
standards of known properties
macrophages - proliferation
Calibration
34. Mast cells release this
heparin
Large
Water
free radical
35. Cells that don't proliferate (neurons)
Permanent cells
Stable cells
Endothelial cells
Free Radical
36. Rather than randomly moving - moves in a directed cell migration manner for specific functions.
Allogeneic
Have to be in a clean room free of dust and biocontamination - expensive
chemotaxis
phagocytosis
37. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.
fibrinogen - factor XIII
Chemotaxis
Stable cells
negative feedback
38. Thrombin activates several upstream factors.
negative feedback
Thermoplastics
Phagocytosis
Positive Feedback
39. ____ grafts are derived from the other humans.
micromachining
Bioactive
Free Radical
Allogeneic
40. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.
chemotaxis
Calibration
Endothelial cells
low
41. Vascular endothelial growth factor is produced in response to ___ and stimulates ___.
Thrombin
Stable cells
hypoxin - angiogenesis
photoactive polymers
42. 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.
mast cells
Plastic
autologous
Large
43. List two chemical characteristics of polymers:
Intermolecular bonding - molecular weight
Plasticizers
hypoxin - angiogenesis
macrophages - proliferation
44. Where are the tissue factors found when they're inactivated
in cytoplasm
Positive Feedback
Intermolecular bonding - molecular weight
Negative Feedback
45. Disfunction of _____ (cells) producing collagenase during the _____ phase of wound healing may form Keloid scars.
heparin
Stress
Polymers - cross linking of polymers
macrophages - proliferation
46. No healing of damage neurons is the result of ____ cells that are not able to ____.
Plasticizers
Intermolecular bonding - molecular weight
Permanent - replicate
phagocytosis
47. Which of polyermization (condensation/free radical) would you choose to obtain a polymer of high molecular weight?
Compression molding
Plasticizers
Free Radical
Proteases
48. A ____ implant is designed to elicit specific - intended to host responses.
autologous
heparin
low
Bioactive
49. Enzymes (proteins) are not activated only when they are in contact with this type of cells
chemotaxis
alloys - passivation
glassy to rubbery
Endothelial cells
50. Is directed cell migration in response to a concentration gradient of soluble molecules.
Chemotaxis
Plasticizers
in cytoplasm
negative feedback