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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. A molecular pathway in which the product of each reaction catalyzes the subsequent reaction.
Plasticizers
chemotaxis
Water - oxygen - metal
Enzyme cascade
2. Foreign body giants cells are produced by fusion of ___.
Stable cells
Regeneration/Repair
Macrophages
Large
3. Disfunction of _____ (cells) producing collagenase during the _____ phase of wound healing may form Keloid scars.
macrophages - proliferation
Have to be in a clean room free of dust and biocontamination - expensive
Protein Absorption
Higher
4. During granulation stage of proliferation - growth factors that produce this ____(answer)_____ that function in degrading fibrin and replacing it with collagen.
heparin
free radical
Proteases
Have to be in a clean room free of dust and biocontamination - expensive
5. Process of producing new blood vessels due to a lack on oxygen and thus inducing VEGF.
Metals
angiogenesis
in cytoplasm
Water - oxygen - metal
6. Is directed cell migration in response to a concentration gradient of soluble molecules.
Polydesperity index
Enzyme cascade
Chemotaxis
Free Radical
7. The calculation of a polymer's molecular weight (weight average and number number average) is based upon values for ____ and ___.
Plastic
Number of polymers - molecular weight of polymer
Negative Feedback
Stable cells
8. What types of wound healing results from injury with inflammation?
chemotaxis
Regeneration/Repair
Chemotaxis
macrophages - proliferation
9. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
labile cells
Phagocytosis
Bioactive
alloys - passivation
10. Resulting from the build up of too much collagen at the surface of injury during the granulation tissue stage of proliferation
Macrophages
micromachining
scars
cycles
11. ____ describes the ability of a device to function appropriately in the presence of blood.
autologous
Permanent cells
Large
Hemocompatibility
12. Thrombin activates several upstream factors.
Protein Absorption
Mast - Collagen
Positive Feedback
Number of polymers - molecular weight of polymer
13. Two things needed in the end product of the creation of a scab
fibrinogen - factor XIII
Thrombin
Polymers - cross linking of polymers
glassy to rubbery
14. Enzyme that really gets the polmerization going!
Thrombin
Polydesperity index
Large
Mast - Collagen
15. Enzymes (proteins) are not activated only when they are in contact with this type of cells
Phagocytosis
Endothelial cells
Plasticizers
Amide
16. List two chemical characteristics of polymers:
Proteases
Intermolecular bonding - molecular weight
Calibration
hypoxin - angiogenesis
17. Cells that proliferate rapidly (fibroblasts)
labile cells
Heparin
autologous
free radical
18. Type of fiber drawing that controls details of a polymer by etching on a microscopic level; thus - controlling mechanical properties as well
Mast - Collagen
Extrusion
Proteases
micromachining
19. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
Plasticizers
Polymers - cross linking of polymers
Large
Water - oxygen - metal
20. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure
Stress
Thrombin
Free Radical
Have to be in a clean room free of dust and biocontamination - expensive
21. Damaged cells at the site of injury (mast cells) release ___ (glycosaminoglycan).
heparin
Damage to cell membranes
Polymers - cross linking of polymers
angiogenesis
22. _____ establishes a quantitative relationship between measured output values from an instrument and known standards of what is being measured.
binding
Polydesperity index
negative feedback
Calibration
23. ____ grafts are derived from the other humans.
Amide
mast cells
labile cells
Allogeneic
24. The trigger for activation of enzymes (anything but endothelial cells!)
binding
autologous
Amide
Have to be in a clean room free of dust and biocontamination - expensive
25. Are polymer additives used to lower glass transition temperature temperature.
negative feedback
Plasticizers
low
hypoxin - angiogenesis
26. Deformation that cannot be recovered once the load is removed from the material is ____ deformation.
Metals
Plastic
free radical
Permanent - replicate
27. This type of feedback creates
Stress
Hemocompatibility
Free Radical
negative feedback
28. This cleaves into fibrinogen which creates fibrin (a sticky enzyme that allows blood to clot)
Thrombin
Amide
fibrinogen - factor XIII
Water - oxygen - metal
29. Collagen ____ is responsible for the gradual gain in mechanical properties of wounded tissue between roughly 4 and 52 weeks post- injury.
cross - linking
Proteases
Large
Thrombin
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.
Proteases
autologous
Collagenase/Remodelling
alloys - passivation
31. ____ are enzymes responsible for protein degradation.
in cytoplasm
Proteases
Calibration
phagocytosis
32. ____ is a measurement that characterizes the breadth of the distribution of a polymer's molecular weight.
Protein Absorption
Polydesperity index
Collagenase
Compression molding
33. The process of calibration establishes a quantitative relationship between ____ __ ___ _____ and the direct output of the intstrument (for example time/volume in GPC).
micromachining
mast cells
standards of known properties
Proteases
34. The fatigue limit is value of applied stress below which a material will not fail no matter the number of ____ applied.
negative feedback
cycles
Collagenase
stress
35. Cells that proliferate slowly over time (aka liver)
Proteases
Number of polymers - molecular weight of polymer
Stable cells
macrophages - proliferation
36. 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.
Allogeneic
autologous
Permanent - replicate
in cytoplasm
37. A condensation polymerization results with an ester bond between two reactants and this comes off as a result
Allogeneic
Calibration
Lower
Water
38. Which of polyermization (condensation/free radical) would you choose to obtain a polymer of high molecular weight?
Large
Water - oxygen - metal
Free Radical
stress
39. Cells that don't proliferate (neurons)
Permanent cells
labile cells
micromachining
neutrophils - macrophages
40. Mast cells release this
heparin
Permanent cells
free radical
Calibration
41. The two types of white blood cells:
Metals
neutrophils - macrophages
Permanent - replicate
Endothelial cells
42. What type of materials are used for photolithography? (substrate is a silicon wafer - built up material is some _____ ____ )
Number of polymers - molecular weight of polymer
photoactive polymers
Regeneration/Repair
Have to be in a clean room free of dust and biocontamination - expensive
43. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.
Allogeneic
Negative Feedback
neutrophils - macrophages
micromachining
44. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.
Proteases
mast cells
Enzyme cascade
Water - oxygen - metal
45. ____ binds to anti- thrombin III (thrombin inhibitor) and increases its potency 1000- fold.
alloys - passivation
Heparin
Lower
chemotaxis
46. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.
phagocytosis
Stable cells
Compression molding
Water
47. ____- are polymers that can be repeatedly softened by heating and hardened by cooling.
fibrinogen - factor XIII
Polydesperity index
Thermoplastics
Bioactive
48. Process that makes long fibers (fiber drawing) by forcing a fluid through an oriface.
labile cells
chemotaxis
Extrusion
negative feedback
49. The glass transition temperature of a poymer at which a polymer transforms from a ____ state to a ___ state.
Permanent - replicate
glassy to rubbery
Extrusion
Water - oxygen - metal
50. 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.
Large
heparin
fibrinogen - factor XIII
autologous