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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. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.
mast cells
Mast - Collagen
Negative Feedback
Bioactive
2. ____ is a measurement that characterizes the breadth of the distribution of a polymer's molecular weight.
glassy to rubbery
Polydesperity index
Protein Absorption
micromachining
3. Cells that proliferate rapidly (fibroblasts)
alloys - passivation
Intermolecular bonding - molecular weight
stress
labile cells
4. 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
heparin
Stress
5. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.
fibrinogen - factor XIII
heparin
chemotaxis
heparin
6. What types of wound healing results from injury with inflammation?
Calibration
Intermolecular bonding - molecular weight
Regeneration/Repair
phagocytosis
7. During granulation stage of proliferation - growth factors that produce this ____(answer)_____ that function in degrading fibrin and replacing it with collagen.
Metals
Macrophages
Proteases
Protein Absorption
8. Process of producing new blood vessels due to a lack on oxygen and thus inducing VEGF.
angiogenesis
Extrusion
alloys - passivation
mast cells
9. 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?
Endothelial cells
Proteases
Compression molding
Lower
10. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.
stress
Damage to cell membranes
photoactive polymers
angiogenesis
11. This cleaves into fibrinogen which creates fibrin (a sticky enzyme that allows blood to clot)
mast cells
Large
Chemotaxis
Thrombin
12. Is directed cell migration in response to a concentration gradient of soluble molecules.
labile cells
Chemotaxis
glassy to rubbery
autologous
13. Two things needed in the end product of the creation of a scab
Regeneration/Repair
heparin
Heparin
Polymers - cross linking of polymers
14. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
Lower
Damage to cell membranes
Phagocytosis
Water - oxygen - metal
15. A molecular pathway in which the product of each reaction catalyzes the subsequent reaction.
autologous
Plasticizers
Enzyme cascade
stress
16. Where are the tissue factors found when they're inactivated
Enzyme cascade
low
in cytoplasm
Stress
17. Which of polyermization (condensation/free radical) would you choose to obtain a polymer of high molecular weight?
stress
in cytoplasm
Free Radical
micromachining
18. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
Thermoplastics
cycles
Water - oxygen - metal
Amide
19. Are polymer additives used to lower glass transition temperature temperature.
Plasticizers
Permanent cells
cross - linking
heparin
20. Resulting from the build up of too much collagen at the surface of injury during the granulation tissue stage of proliferation
Amide
scars
Positive Feedback
binding
21. 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
Compression molding
Positive Feedback
Proteases
22. This type of feedback creates
Plastic
negative feedback
Phagocytosis
Permanent cells
23. Enzyme that really gets the polmerization going!
Stress
Large
Thrombin
Thermoplastics
24. The fatigue limit is value of applied stress below which a material will not fail no matter the number of ____ applied.
Negative Feedback
cycles
Plastic
standards of known properties
25. Higher Molecular weight degrades slower than ____ MW
Polymers - cross linking of polymers
Extrusion
Plasticizers
Lower
26. A ____ implant is designed to elicit specific - intended to host responses.
Bioactive
in cytoplasm
cross - linking
Negative Feedback
27. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.
Enzyme cascade
Calibration
Proteases
low
28. ____ grafts are derived from the other humans.
angiogenesis
Allogeneic
Intermolecular bonding - molecular weight
Phagocytosis
29. Collagen ____ is responsible for the gradual gain in mechanical properties of wounded tissue between roughly 4 and 52 weeks post- injury.
free radical
Water
cycles
cross - linking
30. Cells that proliferate slowly over time (aka liver)
Damage to cell membranes
Positive Feedback
Stable cells
Polymers - cross linking of polymers
31. Damaged cells at the site of injury (mast cells) release ___ (glycosaminoglycan).
heparin
Have to be in a clean room free of dust and biocontamination - expensive
Collagenase/Remodelling
binding
32. ____ binds to anti- thrombin III (thrombin inhibitor) and increases its potency 1000- fold.
Protein Absorption
Heparin
Amide
Thrombin
33. Disfunction of _____ (cells) producing collagenase during the _____ phase of wound healing may form Keloid scars.
phagocytosis
Large
macrophages - proliferation
Stress
34. Thrombin activates several upstream factors.
Positive Feedback
Thrombin
Higher
Water - oxygen - metal
35. Foreign body giants cells are produced by fusion of ___.
Calibration
Amide
fibrinogen - factor XIII
Macrophages
36. ____- are polymers that can be repeatedly softened by heating and hardened by cooling.
Thermoplastics
Higher
stress
Proteases
37. What type of materials are used for photolithography? (substrate is a silicon wafer - built up material is some _____ ____ )
Bioactive
photoactive polymers
Large
standards of known properties
38. Rather than randomly moving - moves in a directed cell migration manner for specific functions.
chemotaxis
stress
Extrusion
Allogeneic
39. Keloid scars forms because disfuntion of
macrophages - proliferation
Heparin
Collagenase
Polydesperity index
40. 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.
autologous
scars
hypoxin - angiogenesis
Plastic
41. The two types of white blood cells:
Higher
neutrophils - macrophages
standards of known properties
angiogenesis
42. Deformation that cannot be recovered once the load is removed from the material is ____ deformation.
Free Radical
Plastic
chemotaxis
photoactive polymers
43. ______ Molecular weight degrades slower than lower MW
Higher
glassy to rubbery
Metals
photoactive polymers
44. 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.
Polymers - cross linking of polymers
Large
neutrophils - macrophages
Number of polymers - molecular weight of polymer
45. Mast cells release this
Thrombin
heparin
negative feedback
Thermoplastics
46. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.
phagocytosis
Protein Absorption
Permanent cells
Compression molding
47. Drawback of micromaching
Have to be in a clean room free of dust and biocontamination - expensive
Bioactive
Polydesperity index
low
48. No healing of damage neurons is the result of ____ cells that are not able to ____.
angiogenesis
Permanent - replicate
Thrombin
Have to be in a clean room free of dust and biocontamination - expensive
49. High conductivity - isotropic - crystalline
Macrophages
Metals
Thermoplastics
Proteases
50. Activates tissue factors aka endothelial damage
neutrophils - macrophages
fibrinogen - factor XIII
Damage to cell membranes
Water - oxygen - metal