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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. Disfunction of _____ (cells) producing collagenase during the _____ phase of wound healing may form Keloid scars.
cycles
fibrinogen - factor XIII
Chemotaxis
macrophages - proliferation
2. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.
Negative Feedback
phagocytosis
Free Radical
Endothelial cells
3. Are polymer additives used to lower glass transition temperature temperature.
Plasticizers
cross - linking
Mast - Collagen
Positive Feedback
4. Two things needed in the end product of the creation of a scab
glassy to rubbery
low
stress
Polymers - cross linking of polymers
5. ____- are polymers that can be repeatedly softened by heating and hardened by cooling.
angiogenesis
Thermoplastics
Permanent - replicate
Bioactive
6. Cells that don't proliferate (neurons)
Permanent cells
Intermolecular bonding - molecular weight
binding
Number of polymers - molecular weight of polymer
7. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.
macrophages - proliferation
mast cells
in cytoplasm
Hemophilia
8. 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.
Heparin
neutrophils - macrophages
autologous
Thermoplastics
9. 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.
photoactive polymers
Permanent - replicate
Enzyme cascade
alloys - passivation
10. Addition polymerization is commonly initiated by ___ - atoms that have an unpaired electron.
low
free radical
Stable cells
alloys - passivation
11. ____ binds to anti- thrombin III (thrombin inhibitor) and increases its potency 1000- fold.
Polymers - cross linking of polymers
Heparin
Intermolecular bonding - molecular weight
low
12. The calculation of a polymer's molecular weight (weight average and number number average) is based upon values for ____ and ___.
Polydesperity index
Number of polymers - molecular weight of polymer
scars
fibrinogen - factor XIII
13. Higher Molecular weight degrades slower than ____ MW
Free Radical
Permanent cells
Proteases
Lower
14. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.
stress
free radical
macrophages - proliferation
labile cells
15. Collagen ____ is responsible for the gradual gain in mechanical properties of wounded tissue between roughly 4 and 52 weeks post- injury.
cross - linking
neutrophils - macrophages
Protein Absorption
micromachining
16. Condition in which patients can literally bleed to death.
Hemophilia
Thrombin
Thermoplastics
Metals
17. High conductivity - isotropic - crystalline
Metals
Enzyme cascade
scars
mast cells
18. Cells that proliferate rapidly (fibroblasts)
Metals
labile cells
macrophages - proliferation
Have to be in a clean room free of dust and biocontamination - expensive
19. This cleaves into fibrinogen which creates fibrin (a sticky enzyme that allows blood to clot)
Intermolecular bonding - molecular weight
mast cells
Thrombin
macrophages - proliferation
20. Keloid scars form due to disfunction of ____.
heparin
Collagenase/Remodelling
cycles
alloys - passivation
21. What type of materials are used for photolithography? (substrate is a silicon wafer - built up material is some _____ ____ )
Metals
photoactive polymers
Chemotaxis
Intermolecular bonding - molecular weight
22. Where are the tissue factors found when they're inactivated
in cytoplasm
macrophages - proliferation
Polymers - cross linking of polymers
Number of polymers - molecular weight of polymer
23. The process of calibration establishes a quantitative relationship between ____ __ ___ _____ and the direct output of the intstrument (for example time/volume in GPC).
Chemotaxis
standards of known properties
Permanent cells
Water
24. The glass transition temperature of a poymer at which a polymer transforms from a ____ state to a ___ state.
glassy to rubbery
free radical
Free Radical
Stable cells
25. Classify the following polymers into appropriate families based on their bond structure i.e. the polymer is an example of poly ____.
Amide
Collagenase/Remodelling
autologous
Allogeneic
26. 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.
photoactive polymers
neutrophils - macrophages
Water
Large
27. ____ grafts are derived from the other humans.
Macrophages
Enzyme cascade
Allogeneic
macrophages - proliferation
28. Is directed cell migration in response to a concentration gradient of soluble molecules.
fibrinogen - factor XIII
Positive Feedback
Chemotaxis
stress
29. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
Protein Absorption
Phagocytosis
Plastic
standards of known properties
30. Keloid scars forms because disfuntion of
Collagenase
Have to be in a clean room free of dust and biocontamination - expensive
Compression molding
heparin
31. ____ describes the ability of a device to function appropriately in the presence of blood.
angiogenesis
mast cells
Hemocompatibility
Damage to cell membranes
32. The two types of white blood cells:
Compression molding
Permanent - replicate
neutrophils - macrophages
Negative Feedback
33. During granulation stage of proliferation - growth factors that produce this ____(answer)_____ that function in degrading fibrin and replacing it with collagen.
chemotaxis
Higher
Proteases
Metals
34. No healing of damage neurons is the result of ____ cells that are not able to ____.
Plastic
Permanent - replicate
Plasticizers
micromachining
35. Thrombin activates several upstream factors.
Hemophilia
Extrusion
heparin
Positive Feedback
36. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.
cross - linking
Proteases
alloys - passivation
Negative Feedback
37. What types of wound healing results from injury with inflammation?
Stable cells
Plasticizers
Permanent cells
Regeneration/Repair
38. ____ is a measurement that characterizes the breadth of the distribution of a polymer's molecular weight.
mast cells
low
Polydesperity index
angiogenesis
39. ____ are enzymes responsible for protein degradation.
cycles
glassy to rubbery
negative feedback
Proteases
40. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
photoactive polymers
labile cells
Water - oxygen - metal
phagocytosis
41. Which of polyermization (condensation/free radical) would you choose to obtain a polymer of high molecular weight?
Collagenase/Remodelling
Free Radical
Thrombin
macrophages - proliferation
42. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure
Compression molding
Extrusion
Stress
Proteases
43. The fibrous capsule surrounding a permanent implant is primarily composed of ___ cells and ____ (matrix).
Intermolecular bonding - molecular weight
Chemotaxis
Polymers - cross linking of polymers
Mast - Collagen
44. ______ Molecular weight degrades slower than lower MW
Stress
Metals
Permanent cells
Higher
45. Rather than randomly moving - moves in a directed cell migration manner for specific functions.
Allogeneic
Thrombin
chemotaxis
phagocytosis
46. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.
fibrinogen - factor XIII
micromachining
Polydesperity index
Plasticizers
47. A molecular pathway in which the product of each reaction catalyzes the subsequent reaction.
Metals
Thrombin
Enzyme cascade
cycles
48. Type of fiber drawing that controls details of a polymer by etching on a microscopic level; thus - controlling mechanical properties as well
micromachining
glassy to rubbery
Collagenase
Thrombin
49. Resulting from the build up of too much collagen at the surface of injury during the granulation tissue stage of proliferation
in cytoplasm
phagocytosis
Intermolecular bonding - molecular weight
scars
50. A condensation polymerization results with an ester bond between two reactants and this comes off as a result
Heparin
Water
Macrophages
heparin