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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. What type of materials are used for photolithography? (substrate is a silicon wafer - built up material is some _____ ____ )
photoactive polymers
heparin
Free Radical
Water
2. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.
Negative Feedback
Endothelial cells
Collagenase/Remodelling
autologous
3. ____ binds to anti- thrombin III (thrombin inhibitor) and increases its potency 1000- fold.
Thrombin
hypoxin - angiogenesis
negative feedback
Heparin
4. What types of wound healing results from injury with inflammation?
Lower
Heparin
Regeneration/Repair
Collagenase
5. Polyethylene oxide grafting to biomaterials was developed to prevent coagulation by interfering with/preventing ___ ___.
Water - oxygen - metal
Intermolecular bonding - molecular weight
stress
Protein Absorption
6. Cells that don't proliferate (neurons)
Lower
Collagenase
Thermoplastics
Permanent cells
7. Foreign body giants cells are produced by fusion of ___.
Amide
Phagocytosis
Macrophages
Endothelial cells
8. Where are the tissue factors found when they're inactivated
in cytoplasm
scars
labile cells
Regeneration/Repair
9. Process of producing new blood vessels due to a lack on oxygen and thus inducing VEGF.
Proteases
scars
angiogenesis
Polymers - cross linking of polymers
10. This type of feedback creates
negative feedback
Hemocompatibility
Metals
Thrombin
11. Damaged cells at the site of injury (mast cells) release ___ (glycosaminoglycan).
Water - oxygen - metal
micromachining
heparin
Large
12. ____- are polymers that can be repeatedly softened by heating and hardened by cooling.
Thermoplastics
Chemotaxis
in cytoplasm
labile cells
13. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.
Endothelial cells
fibrinogen - factor XIII
Macrophages
Polydesperity index
14. A molecular pathway in which the product of each reaction catalyzes the subsequent reaction.
labile cells
Permanent cells
Enzyme cascade
Hemophilia
15. The fibrous capsule surrounding a permanent implant is primarily composed of ___ cells and ____ (matrix).
Mast - Collagen
neutrophils - macrophages
Phagocytosis
Macrophages
16. Drawback of micromaching
Have to be in a clean room free of dust and biocontamination - expensive
Thermoplastics
low
Damage to cell membranes
17. Mast cells release this
heparin
stress
Regeneration/Repair
Plastic
18. A condensation polymerization results with an ester bond between two reactants and this comes off as a result
Protein Absorption
Water - oxygen - metal
Water
Thrombin
19. 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
Phagocytosis
Large
Have to be in a clean room free of dust and biocontamination - expensive
20. Enzymes (proteins) are not activated only when they are in contact with this type of cells
Endothelial cells
Thrombin
Polymers - cross linking of polymers
Compression molding
21. Two things needed in the end product of the creation of a scab
Water
Polymers - cross linking of polymers
Thrombin
Metals
22. The fatigue limit is value of applied stress below which a material will not fail no matter the number of ____ applied.
Plasticizers
Endothelial cells
Stable cells
cycles
23. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
Thrombin
Endothelial cells
Phagocytosis
Hemocompatibility
24. Thrombin activates several upstream factors.
angiogenesis
Positive Feedback
Hemophilia
Amide
25. Higher Molecular weight degrades slower than ____ MW
Plastic
Lower
Have to be in a clean room free of dust and biocontamination - expensive
heparin
26. The process of calibration establishes a quantitative relationship between ____ __ ___ _____ and the direct output of the intstrument (for example time/volume in GPC).
Permanent - replicate
Thrombin
standards of known properties
Large
27. You're working on a square polymeric implant of 5cm length and 2mm thick. You've been asked to suggest a precise way to fabricate it - what would you suggest?
Compression molding
Calibration
Thrombin
Extrusion
28. Classify the following polymers into appropriate families based on their bond structure i.e. the polymer is an example of poly ____.
Large
Amide
hypoxin - angiogenesis
Free Radical
29. Which of polyermization (condensation/free radical) would you choose to obtain a polymer of high molecular weight?
Stable cells
Water
Free Radical
hypoxin - angiogenesis
30. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.
cross - linking
stress
Phagocytosis
Regeneration/Repair
31. ____ grafts are derived from the other humans.
autologous
Metals
Allogeneic
labile cells
32. Are polymer additives used to lower glass transition temperature temperature.
negative feedback
Free Radical
Plasticizers
Collagenase
33. Process that makes long fibers (fiber drawing) by forcing a fluid through an oriface.
Hemophilia
Polymers - cross linking of polymers
Extrusion
Water - oxygen - metal
34. The two types of white blood cells:
photoactive polymers
Extrusion
Stress
neutrophils - macrophages
35. This cleaves into fibrinogen which creates fibrin (a sticky enzyme that allows blood to clot)
Amide
Have to be in a clean room free of dust and biocontamination - expensive
mast cells
Thrombin
36. A ____ implant is designed to elicit specific - intended to host responses.
scars
Bioactive
Thrombin
cycles
37. Rather than randomly moving - moves in a directed cell migration manner for specific functions.
Permanent cells
Permanent - replicate
Stress
chemotaxis
38. Addition polymerization is commonly initiated by ___ - atoms that have an unpaired electron.
Thrombin
phagocytosis
free radical
glassy to rubbery
39. 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.
angiogenesis
Calibration
autologous
Heparin
40. Type of fiber drawing that controls details of a polymer by etching on a microscopic level; thus - controlling mechanical properties as well
phagocytosis
Number of polymers - molecular weight of polymer
micromachining
labile cells
41. The glass transition temperature of a poymer at which a polymer transforms from a ____ state to a ___ state.
Proteases
Collagenase/Remodelling
glassy to rubbery
Proteases
42. No healing of damage neurons is the result of ____ cells that are not able to ____.
Mast - Collagen
Extrusion
Permanent - replicate
Macrophages
43. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure
Plasticizers
Large
scars
Stress
44. Condition in which patients can literally bleed to death.
Free Radical
Hemophilia
Stable cells
free radical
45. During granulation stage of proliferation - growth factors that produce this ____(answer)_____ that function in degrading fibrin and replacing it with collagen.
Macrophages
Polydesperity index
cycles
Proteases
46. 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.
alloys - passivation
Permanent - replicate
Protein Absorption
Plastic
47. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.
Water - oxygen - metal
phagocytosis
Polydesperity index
binding
48. Vascular endothelial growth factor is produced in response to ___ and stimulates ___.
hypoxin - angiogenesis
binding
photoactive polymers
Macrophages
49. _____ establishes a quantitative relationship between measured output values from an instrument and known standards of what is being measured.
labile cells
Calibration
Water - oxygen - metal
Water
50. Cells that proliferate rapidly (fibroblasts)
heparin
cross - linking
labile cells
Water