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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. 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
Chemotaxis
Enzyme cascade
Hemocompatibility
2. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.
phagocytosis
autologous
Thrombin
mast cells
3. High conductivity - isotropic - crystalline
Metals
Amide
Have to be in a clean room free of dust and biocontamination - expensive
hypoxin - angiogenesis
4. ____ is a measurement that characterizes the breadth of the distribution of a polymer's molecular weight.
Polydesperity index
Thermoplastics
photoactive polymers
glassy to rubbery
5. Is directed cell migration in response to a concentration gradient of soluble molecules.
Chemotaxis
Damage to cell membranes
Proteases
glassy to rubbery
6. Two things needed in the end product of the creation of a scab
Polymers - cross linking of polymers
Water
Stable cells
Metals
7. Enzyme that really gets the polmerization going!
labile cells
Higher
Thrombin
mast cells
8. Keloid scars form due to disfunction of ____.
Water
Collagenase/Remodelling
hypoxin - angiogenesis
cycles
9. ____ describes the ability of a device to function appropriately in the presence of blood.
Thrombin
macrophages - proliferation
Hemocompatibility
Extrusion
10. Are polymer additives used to lower glass transition temperature temperature.
Plastic
Bioactive
Allogeneic
Plasticizers
11. _____ establishes a quantitative relationship between measured output values from an instrument and known standards of what is being measured.
Calibration
heparin
hypoxin - angiogenesis
Collagenase
12. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.
Regeneration/Repair
fibrinogen - factor XIII
Polydesperity index
Collagenase/Remodelling
13. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
free radical
Extrusion
Water - oxygen - metal
Phagocytosis
14. Higher Molecular weight degrades slower than ____ MW
Hemophilia
Lower
labile cells
Polymers - cross linking of polymers
15. This cleaves into fibrinogen which creates fibrin (a sticky enzyme that allows blood to clot)
Heparin
Thrombin
stress
Plastic
16. Drawback of micromaching
Protein Absorption
binding
Have to be in a clean room free of dust and biocontamination - expensive
Higher
17. Cells that proliferate rapidly (fibroblasts)
stress
labile cells
Hemocompatibility
Intermolecular bonding - molecular weight
18. Which of polyermization (condensation/free radical) would you choose to obtain a polymer of high molecular weight?
Phagocytosis
stress
Free Radical
Macrophages
19. Disfunction of _____ (cells) producing collagenase during the _____ phase of wound healing may form Keloid scars.
low
Extrusion
Macrophages
macrophages - proliferation
20. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.
alloys - passivation
Negative Feedback
hypoxin - angiogenesis
low
21. A ____ implant is designed to elicit specific - intended to host responses.
Calibration
Polydesperity index
Extrusion
Bioactive
22. Classify the following polymers into appropriate families based on their bond structure i.e. the polymer is an example of poly ____.
Amide
labile cells
Thermoplastics
Permanent - replicate
23. This type of feedback creates
Bioactive
Phagocytosis
negative feedback
fibrinogen - factor XIII
24. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.
photoactive polymers
Water
mast cells
Heparin
25. ____ are enzymes responsible for protein degradation.
mast cells
low
Lower
Proteases
26. Foreign body giants cells are produced by fusion of ___.
Macrophages
Chemotaxis
Regeneration/Repair
glassy to rubbery
27. Polyethylene oxide grafting to biomaterials was developed to prevent coagulation by interfering with/preventing ___ ___.
Collagenase
Protein Absorption
Stress
Bioactive
28. Resulting from the build up of too much collagen at the surface of injury during the granulation tissue stage of proliferation
Bioactive
low
Endothelial cells
scars
29. No healing of damage neurons is the result of ____ cells that are not able to ____.
Positive Feedback
Permanent - replicate
cross - linking
Extrusion
30. 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.
Permanent cells
Thrombin
Damage to cell membranes
autologous
31. Rather than randomly moving - moves in a directed cell migration manner for specific functions.
Thrombin
chemotaxis
Free Radical
Collagenase
32. Process of producing new blood vessels due to a lack on oxygen and thus inducing VEGF.
angiogenesis
fibrinogen - factor XIII
Hemophilia
macrophages - proliferation
33. Type of fiber drawing that controls details of a polymer by etching on a microscopic level; thus - controlling mechanical properties as well
heparin
micromachining
Heparin
Collagenase
34. The fibrous capsule surrounding a permanent implant is primarily composed of ___ cells and ____ (matrix).
Mast - Collagen
mast cells
Lower
chemotaxis
35. ______ Molecular weight degrades slower than lower MW
Higher
Lower
Damage to cell membranes
Water - oxygen - metal
36. Process that makes long fibers (fiber drawing) by forcing a fluid through an oriface.
Stable cells
Extrusion
fibrinogen - factor XIII
Large
37. Cells that proliferate slowly over time (aka liver)
Stable cells
angiogenesis
Proteases
Hemocompatibility
38. List two chemical characteristics of polymers:
Endothelial cells
Negative Feedback
Collagenase/Remodelling
Intermolecular bonding - molecular weight
39. ____ grafts are derived from the other humans.
Amide
Protein Absorption
cycles
Allogeneic
40. 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?
Phagocytosis
Polymers - cross linking of polymers
Compression molding
Positive Feedback
41. Activates tissue factors aka endothelial damage
Damage to cell membranes
Metals
Higher
phagocytosis
42. Deformation that cannot be recovered once the load is removed from the material is ____ deformation.
heparin
Plastic
Number of polymers - molecular weight of polymer
Positive Feedback
43. Condition in which patients can literally bleed to death.
negative feedback
Hemophilia
Regeneration/Repair
Protein Absorption
44. The glass transition temperature of a poymer at which a polymer transforms from a ____ state to a ___ state.
cycles
glassy to rubbery
Damage to cell membranes
Free Radical
45. The process of calibration establishes a quantitative relationship between ____ __ ___ _____ and the direct output of the intstrument (for example time/volume in GPC).
Proteases
fibrinogen - factor XIII
Positive Feedback
standards of known properties
46. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
Number of polymers - molecular weight of polymer
Phagocytosis
Water - oxygen - metal
Bioactive
47. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.
Lower
mast cells
low
Permanent - replicate
48. Cells that don't proliferate (neurons)
Permanent cells
stress
scars
fibrinogen - factor XIII
49. During granulation stage of proliferation - growth factors that produce this ____(answer)_____ that function in degrading fibrin and replacing it with collagen.
cross - linking
Polymers - cross linking of polymers
Proteases
Collagenase/Remodelling
50. Keloid scars forms because disfuntion of
Allogeneic
binding
Collagenase
photoactive polymers