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