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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. 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.
Thrombin
autologous
Phagocytosis
Endothelial cells
2. Process of producing new blood vessels due to a lack on oxygen and thus inducing VEGF.
angiogenesis
Compression molding
Calibration
Permanent - replicate
3. Where are the tissue factors found when they're inactivated
fibrinogen - factor XIII
Damage to cell membranes
autologous
in cytoplasm
4. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure
free radical
Macrophages
Stress
Water
5. Two things needed in the end product of the creation of a scab
in cytoplasm
Polymers - cross linking of polymers
Calibration
Stable cells
6. Resulting from the build up of too much collagen at the surface of injury during the granulation tissue stage of proliferation
low
negative feedback
scars
Amide
7. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.
Chemotaxis
standards of known properties
stress
heparin
8. Enzymes (proteins) are not activated only when they are in contact with this type of cells
mast cells
Endothelial cells
labile cells
autologous
9. No healing of damage neurons is the result of ____ cells that are not able to ____.
Permanent - replicate
Endothelial cells
Stable cells
in cytoplasm
10. This type of feedback creates
Large
Thermoplastics
negative feedback
heparin
11. What type of materials are used for photolithography? (substrate is a silicon wafer - built up material is some _____ ____ )
photoactive polymers
Amide
Collagenase
Proteases
12. Foreign body giants cells are produced by fusion of ___.
Thrombin
photoactive polymers
heparin
Macrophages
13. Is directed cell migration in response to a concentration gradient of soluble molecules.
Chemotaxis
micromachining
Permanent - replicate
Thermoplastics
14. Classify the following polymers into appropriate families based on their bond structure i.e. the polymer is an example of poly ____.
Polydesperity index
Amide
Enzyme cascade
Lower
15. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.
Damage to cell membranes
Allogeneic
low
Extrusion
16. High conductivity - isotropic - crystalline
free radical
Metals
scars
Thermoplastics
17. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.
Lower
mast cells
Plastic
Stress
18. Thrombin activates several upstream factors.
Positive Feedback
Proteases
Bioactive
Stable cells
19. ____- are polymers that can be repeatedly softened by heating and hardened by cooling.
Plasticizers
Free Radical
mast cells
Thermoplastics
20. 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.
Water - oxygen - metal
standards of known properties
alloys - passivation
Mast - Collagen
21. ____ describes the ability of a device to function appropriately in the presence of blood.
scars
Proteases
Stable cells
Hemocompatibility
22. Deformation that cannot be recovered once the load is removed from the material is ____ deformation.
Plastic
free radical
Heparin
macrophages - proliferation
23. 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.
Compression molding
Thrombin
Polydesperity index
Large
24. Cells that proliferate slowly over time (aka liver)
Number of polymers - molecular weight of polymer
Stable cells
angiogenesis
Large
25. ______ Molecular weight degrades slower than lower MW
Higher
Calibration
micromachining
Phagocytosis
26. Rather than randomly moving - moves in a directed cell migration manner for specific functions.
chemotaxis
low
Large
free radical
27. Cells that don't proliferate (neurons)
Collagenase
Collagenase/Remodelling
Free Radical
Permanent cells
28. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
Damage to cell membranes
Phagocytosis
Allogeneic
Intermolecular bonding - molecular weight
29. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.
standards of known properties
micromachining
heparin
fibrinogen - factor XIII
30. 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
Endothelial cells
Allogeneic
31. Mast cells release this
heparin
Bioactive
Thermoplastics
macrophages - proliferation
32. Polyethylene oxide grafting to biomaterials was developed to prevent coagulation by interfering with/preventing ___ ___.
Chemotaxis
Protein Absorption
Plastic
Amide
33. Addition polymerization is commonly initiated by ___ - atoms that have an unpaired electron.
free radical
Polydesperity index
Calibration
Water - oxygen - metal
34. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
Have to be in a clean room free of dust and biocontamination - expensive
Water - oxygen - metal
fibrinogen - factor XIII
binding
35. Activates tissue factors aka endothelial damage
Regeneration/Repair
Thermoplastics
Negative Feedback
Damage to cell membranes
36. A condensation polymerization results with an ester bond between two reactants and this comes off as a result
micromachining
heparin
Chemotaxis
Water
37. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.
Permanent - replicate
Negative Feedback
Regeneration/Repair
Damage to cell membranes
38. Keloid scars form due to disfunction of ____.
Collagenase/Remodelling
Heparin
Regeneration/Repair
Extrusion
39. Process that makes long fibers (fiber drawing) by forcing a fluid through an oriface.
Extrusion
standards of known properties
Number of polymers - molecular weight of polymer
heparin
40. ____ binds to anti- thrombin III (thrombin inhibitor) and increases its potency 1000- fold.
Heparin
Plastic
Chemotaxis
glassy to rubbery
41. Vascular endothelial growth factor is produced in response to ___ and stimulates ___.
neutrophils - macrophages
hypoxin - angiogenesis
heparin
Bioactive
42. Cells that proliferate rapidly (fibroblasts)
labile cells
cross - linking
Polymers - cross linking of polymers
stress
43. Condition in which patients can literally bleed to death.
Collagenase
Hemophilia
cross - linking
Water
44. The process of calibration establishes a quantitative relationship between ____ __ ___ _____ and the direct output of the intstrument (for example time/volume in GPC).
in cytoplasm
standards of known properties
Have to be in a clean room free of dust and biocontamination - expensive
Thermoplastics
45. ____ grafts are derived from the other humans.
Allogeneic
Plasticizers
Hemocompatibility
neutrophils - macrophages
46. Which of polyermization (condensation/free radical) would you choose to obtain a polymer of high molecular weight?
Stable cells
cross - linking
Free Radical
Plasticizers
47. Are polymer additives used to lower glass transition temperature temperature.
Plasticizers
in cytoplasm
Mast - Collagen
negative feedback
48. The trigger for activation of enzymes (anything but endothelial cells!)
binding
negative feedback
Water - oxygen - metal
Polydesperity index
49. The two types of white blood cells:
Stable cells
neutrophils - macrophages
Protein Absorption
alloys - passivation
50. The calculation of a polymer's molecular weight (weight average and number number average) is based upon values for ____ and ___.
Mast - Collagen
Number of polymers - molecular weight of polymer
Damage to cell membranes
Proteases