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. Cells that proliferate slowly over time (aka liver)
Thermoplastics
Stress
Polymers - cross linking of polymers
Stable cells
2. Enzyme that really gets the polmerization going!
Enzyme cascade
Have to be in a clean room free of dust and biocontamination - expensive
Thrombin
Calibration
3. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.
Enzyme cascade
Water - oxygen - metal
fibrinogen - factor XIII
Extrusion
4. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.
Permanent cells
micromachining
Regeneration/Repair
phagocytosis
5. List two chemical characteristics of polymers:
Polydesperity index
Water
Intermolecular bonding - molecular weight
Hemophilia
6. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
Endothelial cells
Polydesperity index
cross - linking
Water - oxygen - metal
7. Which of polyermization (condensation/free radical) would you choose to obtain a polymer of high molecular weight?
Free Radical
Compression molding
macrophages - proliferation
Allogeneic
8. Addition polymerization is commonly initiated by ___ - atoms that have an unpaired electron.
free radical
Proteases
Enzyme cascade
negative feedback
9. The glass transition temperature of a poymer at which a polymer transforms from a ____ state to a ___ state.
alloys - passivation
glassy to rubbery
mast cells
standards of known properties
10. No healing of damage neurons is the result of ____ cells that are not able to ____.
free radical
labile cells
Permanent - replicate
Stable cells
11. The fatigue limit is value of applied stress below which a material will not fail no matter the number of ____ applied.
Allogeneic
Hemophilia
macrophages - proliferation
cycles
12. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.
Compression molding
Stable cells
Protein Absorption
stress
13. ____ binds to anti- thrombin III (thrombin inhibitor) and increases its potency 1000- fold.
Heparin
Hemophilia
Thrombin
binding
14. Foreign body giants cells are produced by fusion of ___.
Macrophages
Have to be in a clean room free of dust and biocontamination - expensive
Bioactive
Proteases
15. The calculation of a polymer's molecular weight (weight average and number number average) is based upon values for ____ and ___.
Number of polymers - molecular weight of polymer
Permanent cells
Polydesperity index
hypoxin - angiogenesis
16. Resulting from the build up of too much collagen at the surface of injury during the granulation tissue stage of proliferation
Stable cells
scars
neutrophils - macrophages
Thrombin
17. Enzymes (proteins) are not activated only when they are in contact with this type of cells
Bioactive
in cytoplasm
Endothelial cells
heparin
18. Type of fiber drawing that controls details of a polymer by etching on a microscopic level; thus - controlling mechanical properties as well
micromachining
Collagenase/Remodelling
cycles
Proteases
19. ____ are enzymes responsible for protein degradation.
Proteases
Lower
Mast - Collagen
autologous
20. Classify the following polymers into appropriate families based on their bond structure i.e. the polymer is an example of poly ____.
Amide
Polydesperity index
Heparin
alloys - passivation
21. A molecular pathway in which the product of each reaction catalyzes the subsequent reaction.
Enzyme cascade
alloys - passivation
Thrombin
Negative Feedback
22. Higher Molecular weight degrades slower than ____ MW
Chemotaxis
Lower
Collagenase/Remodelling
Collagenase
23. A ____ implant is designed to elicit specific - intended to host responses.
Thrombin
Positive Feedback
Bioactive
fibrinogen - factor XIII
24. Thrombin activates several upstream factors.
Positive Feedback
Extrusion
low
Intermolecular bonding - molecular weight
25. Cells that proliferate rapidly (fibroblasts)
Endothelial cells
micromachining
cycles
labile cells
26. High conductivity - isotropic - crystalline
Number of polymers - molecular weight of polymer
phagocytosis
Metals
Damage to cell membranes
27. This cleaves into fibrinogen which creates fibrin (a sticky enzyme that allows blood to clot)
Amide
Thermoplastics
Thrombin
Extrusion
28. Process of producing new blood vessels due to a lack on oxygen and thus inducing VEGF.
Extrusion
Damage to cell membranes
low
angiogenesis
29. Cells that don't proliferate (neurons)
in cytoplasm
Endothelial cells
Permanent cells
Polydesperity index
30. Process that makes long fibers (fiber drawing) by forcing a fluid through an oriface.
Positive Feedback
hypoxin - angiogenesis
Intermolecular bonding - molecular weight
Extrusion
31. Drawback of micromaching
Compression molding
chemotaxis
Have to be in a clean room free of dust and biocontamination - expensive
Intermolecular bonding - molecular weight
32. 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?
Polymers - cross linking of polymers
Compression molding
Macrophages
Hemophilia
33. _____ establishes a quantitative relationship between measured output values from an instrument and known standards of what is being measured.
angiogenesis
low
Calibration
hypoxin - angiogenesis
34. The two types of white blood cells:
heparin
Positive Feedback
neutrophils - macrophages
Thrombin
35. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure
macrophages - proliferation
micromachining
Endothelial cells
Stress
36. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.
Permanent - replicate
Bioactive
macrophages - proliferation
mast cells
37. Mast cells release this
Permanent - replicate
Higher
Mast - Collagen
heparin
38. Rather than randomly moving - moves in a directed cell migration manner for specific functions.
chemotaxis
angiogenesis
Regeneration/Repair
Damage to cell membranes
39. A condensation polymerization results with an ester bond between two reactants and this comes off as a result
Free Radical
Water - oxygen - metal
Water
Number of polymers - molecular weight of polymer
40. Keloid scars form due to disfunction of ____.
Polydesperity index
Collagenase/Remodelling
Stable cells
Proteases
41. Disfunction of _____ (cells) producing collagenase during the _____ phase of wound healing may form Keloid scars.
cycles
Polymers - cross linking of polymers
macrophages - proliferation
Extrusion
42. Condition in which patients can literally bleed to death.
Thermoplastics
Extrusion
Hemophilia
in cytoplasm
43. ____- are polymers that can be repeatedly softened by heating and hardened by cooling.
Mast - Collagen
Thermoplastics
Polydesperity index
Enzyme cascade
44. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.
Compression molding
Proteases
Negative Feedback
Metals
45. Deformation that cannot be recovered once the load is removed from the material is ____ deformation.
Plastic
Lower
Large
in cytoplasm
46. 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.
Bioactive
macrophages - proliferation
alloys - passivation
Large
47. Vascular endothelial growth factor is produced in response to ___ and stimulates ___.
cycles
Enzyme cascade
Hemocompatibility
hypoxin - angiogenesis
48. ____ describes the ability of a device to function appropriately in the presence of blood.
standards of known properties
Protein Absorption
Amide
Hemocompatibility
49. Activates tissue factors aka endothelial damage
standards of known properties
Regeneration/Repair
Damage to cell membranes
Free Radical
50. The fibrous capsule surrounding a permanent implant is primarily composed of ___ cells and ____ (matrix).
Thrombin
stress
Allogeneic
Mast - Collagen