SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
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. Damaged cells at the site of injury (mast cells) release ___ (glycosaminoglycan).
Stable cells
Thrombin
Bioactive
heparin
2. Process of producing new blood vessels due to a lack on oxygen and thus inducing VEGF.
Hemophilia
angiogenesis
Macrophages
Regeneration/Repair
3. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.
cycles
free radical
stress
low
4. This type of feedback creates
Hemophilia
negative feedback
Polydesperity index
Damage to cell membranes
5. Vascular endothelial growth factor is produced in response to ___ and stimulates ___.
Hemophilia
hypoxin - angiogenesis
alloys - passivation
Chemotaxis
6. List two chemical characteristics of polymers:
heparin
Intermolecular bonding - molecular weight
low
macrophages - proliferation
7. Collagen ____ is responsible for the gradual gain in mechanical properties of wounded tissue between roughly 4 and 52 weeks post- injury.
angiogenesis
Number of polymers - molecular weight of polymer
cross - linking
Negative Feedback
8. Drawback of micromaching
Proteases
Polydesperity index
Have to be in a clean room free of dust and biocontamination - expensive
Plastic
9. The fatigue limit is value of applied stress below which a material will not fail no matter the number of ____ applied.
in cytoplasm
angiogenesis
Chemotaxis
cycles
10. Foreign body giants cells are produced by fusion of ___.
Macrophages
Negative Feedback
autologous
Plasticizers
11. ____ describes the ability of a device to function appropriately in the presence of blood.
Calibration
chemotaxis
Hemocompatibility
Damage to cell membranes
12. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.
hypoxin - angiogenesis
mast cells
Damage to cell membranes
negative feedback
13. The glass transition temperature of a poymer at which a polymer transforms from a ____ state to a ___ state.
Allogeneic
glassy to rubbery
Polymers - cross linking of polymers
Stable cells
14. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.
Positive Feedback
Negative Feedback
Allogeneic
stress
15. Cells that don't proliferate (neurons)
angiogenesis
Chemotaxis
Permanent cells
Collagenase/Remodelling
16. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
free radical
Negative Feedback
Higher
Phagocytosis
17. Deformation that cannot be recovered once the load is removed from the material is ____ deformation.
standards of known properties
Plastic
Thrombin
fibrinogen - factor XIII
18. No healing of damage neurons is the result of ____ cells that are not able to ____.
Polymers - cross linking of polymers
Enzyme cascade
Permanent - replicate
Extrusion
19. Is directed cell migration in response to a concentration gradient of soluble molecules.
Protein Absorption
free radical
autologous
Chemotaxis
20. ____ binds to anti- thrombin III (thrombin inhibitor) and increases its potency 1000- fold.
Regeneration/Repair
Permanent cells
Free Radical
Heparin
21. The fibrous capsule surrounding a permanent implant is primarily composed of ___ cells and ____ (matrix).
cycles
Mast - Collagen
Intermolecular bonding - molecular weight
Permanent cells
22. Cells that proliferate rapidly (fibroblasts)
Water
labile cells
Stable cells
fibrinogen - factor XIII
23. _____ establishes a quantitative relationship between measured output values from an instrument and known standards of what is being measured.
angiogenesis
Calibration
phagocytosis
Heparin
24. Keloid scars forms because disfuntion of
Plasticizers
Stable cells
Collagenase
autologous
25. 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
macrophages - proliferation
Endothelial cells
26. Disfunction of _____ (cells) producing collagenase during the _____ phase of wound healing may form Keloid scars.
Plasticizers
Hemocompatibility
macrophages - proliferation
cross - linking
27. ____ is a measurement that characterizes the breadth of the distribution of a polymer's molecular weight.
alloys - passivation
Chemotaxis
Polydesperity index
low
28. 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
Chemotaxis
Allogeneic
Collagenase
29. A condensation polymerization results with an ester bond between two reactants and this comes off as a result
Polydesperity index
mast cells
Water
Proteases
30. ____ grafts are derived from the other humans.
standards of known properties
Negative Feedback
Plastic
Allogeneic
31. Rather than randomly moving - moves in a directed cell migration manner for specific functions.
heparin
chemotaxis
Intermolecular bonding - molecular weight
photoactive polymers
32. Cells that proliferate slowly over time (aka liver)
Stable cells
Endothelial cells
neutrophils - macrophages
Negative Feedback
33. A molecular pathway in which the product of each reaction catalyzes the subsequent reaction.
Water
Enzyme cascade
Stable cells
Permanent - replicate
34. A ____ implant is designed to elicit specific - intended to host responses.
Bioactive
cross - linking
Lower
alloys - passivation
35. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
Amide
Water - oxygen - metal
autologous
Macrophages
36. Condition in which patients can literally bleed to death.
Hemophilia
angiogenesis
Enzyme cascade
photoactive polymers
37. Keloid scars form due to disfunction of ____.
Polydesperity index
Water - oxygen - metal
Collagenase/Remodelling
Have to be in a clean room free of dust and biocontamination - expensive
38. Enzyme that really gets the polmerization going!
Negative Feedback
Thrombin
Chemotaxis
Large
39. This cleaves into fibrinogen which creates fibrin (a sticky enzyme that allows blood to clot)
Thrombin
mast cells
micromachining
Plastic
40. Classify the following polymers into appropriate families based on their bond structure i.e. the polymer is an example of poly ____.
Intermolecular bonding - molecular weight
Regeneration/Repair
Thrombin
Amide
41. What types of wound healing results from injury with inflammation?
macrophages - proliferation
negative feedback
micromachining
Regeneration/Repair
42. ______ Molecular weight degrades slower than lower MW
Permanent - replicate
Higher
Plasticizers
Mast - Collagen
43. High conductivity - isotropic - crystalline
heparin
Collagenase/Remodelling
Stable cells
Metals
44. Resulting from the build up of too much collagen at the surface of injury during the granulation tissue stage of proliferation
Polymers - cross linking of polymers
scars
autologous
heparin
45. Type of fiber drawing that controls details of a polymer by etching on a microscopic level; thus - controlling mechanical properties as well
Calibration
chemotaxis
Thermoplastics
micromachining
46. Addition polymerization is commonly initiated by ___ - atoms that have an unpaired electron.
Extrusion
free radical
Metals
binding
47. 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?
Higher
Permanent - replicate
negative feedback
Compression molding
48. 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
Thrombin
Mast - Collagen
binding
49. 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.
Permanent - replicate
alloys - passivation
Stable cells
Free Radical
50. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure
Stress
Large
photoactive polymers
heparin