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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. Type of fiber drawing that controls details of a polymer by etching on a microscopic level; thus - controlling mechanical properties as well
Plasticizers
micromachining
fibrinogen - factor XIII
Permanent cells
2. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.
Amide
mast cells
Positive Feedback
negative feedback
3. Cells that don't proliferate (neurons)
Chemotaxis
fibrinogen - factor XIII
Proteases
Permanent cells
4. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.
phagocytosis
macrophages - proliferation
glassy to rubbery
Regeneration/Repair
5. No healing of damage neurons is the result of ____ cells that are not able to ____.
Negative Feedback
Macrophages
Permanent - replicate
Collagenase
6. Resulting from the build up of too much collagen at the surface of injury during the granulation tissue stage of proliferation
scars
standards of known properties
Damage to cell membranes
Thrombin
7. What types of wound healing results from injury with inflammation?
alloys - passivation
heparin
Regeneration/Repair
Hemophilia
8. _____ establishes a quantitative relationship between measured output values from an instrument and known standards of what is being measured.
binding
Calibration
in cytoplasm
Large
9. Mast cells release this
autologous
heparin
Polymers - cross linking of polymers
Calibration
10. A condensation polymerization results with an ester bond between two reactants and this comes off as a result
labile cells
Protein Absorption
Water
Macrophages
11. During granulation stage of proliferation - growth factors that produce this ____(answer)_____ that function in degrading fibrin and replacing it with collagen.
Plasticizers
binding
Negative Feedback
Proteases
12. The fibrous capsule surrounding a permanent implant is primarily composed of ___ cells and ____ (matrix).
Free Radical
Endothelial cells
Collagenase/Remodelling
Mast - Collagen
13. A molecular pathway in which the product of each reaction catalyzes the subsequent reaction.
mast cells
Enzyme cascade
fibrinogen - factor XIII
stress
14. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
phagocytosis
heparin
Water - oxygen - metal
Thrombin
15. Keloid scars forms because disfuntion of
Collagenase
Permanent cells
labile cells
free radical
16. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.
Number of polymers - molecular weight of polymer
Collagenase/Remodelling
Plastic
fibrinogen - factor XIII
17. 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.
Large
autologous
Lower
Plastic
18. Are polymer additives used to lower glass transition temperature temperature.
Plasticizers
stress
phagocytosis
Large
19. Cells that proliferate slowly over time (aka liver)
Polymers - cross linking of polymers
Stress
Hemophilia
Stable cells
20. Foreign body giants cells are produced by fusion of ___.
Macrophages
Plastic
Thrombin
low
21. Damaged cells at the site of injury (mast cells) release ___ (glycosaminoglycan).
heparin
negative feedback
Hemophilia
Macrophages
22. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.
Calibration
Macrophages
Metals
stress
23. ____ are enzymes responsible for protein degradation.
Compression molding
autologous
Proteases
Thermoplastics
24. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.
Extrusion
Amide
scars
low
25. Collagen ____ is responsible for the gradual gain in mechanical properties of wounded tissue between roughly 4 and 52 weeks post- injury.
Amide
Stress
Bioactive
cross - linking
26. Cells that proliferate rapidly (fibroblasts)
Compression molding
labile cells
binding
Water
27. Where are the tissue factors found when they're inactivated
in cytoplasm
Collagenase/Remodelling
Water
Permanent - replicate
28. The trigger for activation of enzymes (anything but endothelial cells!)
Regeneration/Repair
autologous
Permanent cells
binding
29. Two things needed in the end product of the creation of a scab
Stress
Protein Absorption
Chemotaxis
Polymers - cross linking of polymers
30. Process of producing new blood vessels due to a lack on oxygen and thus inducing VEGF.
Phagocytosis
angiogenesis
Collagenase/Remodelling
Number of polymers - molecular weight of polymer
31. Classify the following polymers into appropriate families based on their bond structure i.e. the polymer is an example of poly ____.
binding
Amide
chemotaxis
neutrophils - macrophages
32. Vascular endothelial growth factor is produced in response to ___ and stimulates ___.
Higher
Polymers - cross linking of polymers
Permanent - replicate
hypoxin - angiogenesis
33. The process of calibration establishes a quantitative relationship between ____ __ ___ _____ and the direct output of the intstrument (for example time/volume in GPC).
fibrinogen - factor XIII
standards of known properties
Heparin
negative feedback
34. Process that makes long fibers (fiber drawing) by forcing a fluid through an oriface.
Thermoplastics
Positive Feedback
Macrophages
Extrusion
35. A ____ implant is designed to elicit specific - intended to host responses.
Bioactive
Polymers - cross linking of polymers
Water
Amide
36. ____ describes the ability of a device to function appropriately in the presence of blood.
Enzyme cascade
Hemocompatibility
Regeneration/Repair
Permanent - replicate
37. Enzymes (proteins) are not activated only when they are in contact with this type of cells
Endothelial cells
Plastic
Plasticizers
scars
38. Deformation that cannot be recovered once the load is removed from the material is ____ deformation.
photoactive polymers
Plastic
Large
in cytoplasm
39. This cleaves into fibrinogen which creates fibrin (a sticky enzyme that allows blood to clot)
Chemotaxis
Phagocytosis
Permanent cells
Thrombin
40. Enzyme that really gets the polmerization going!
neutrophils - macrophages
hypoxin - angiogenesis
in cytoplasm
Thrombin
41. Addition polymerization is commonly initiated by ___ - atoms that have an unpaired electron.
neutrophils - macrophages
Compression molding
stress
free radical
42. Is directed cell migration in response to a concentration gradient of soluble molecules.
Chemotaxis
Macrophages
Lower
Mast - Collagen
43. The calculation of a polymer's molecular weight (weight average and number number average) is based upon values for ____ and ___.
low
glassy to rubbery
Stress
Number of polymers - molecular weight of polymer
44. Disfunction of _____ (cells) producing collagenase during the _____ phase of wound healing may form Keloid scars.
macrophages - proliferation
Thrombin
binding
Permanent - replicate
45. This type of feedback creates
Enzyme cascade
Regeneration/Repair
negative feedback
Allogeneic
46. The fatigue limit is value of applied stress below which a material will not fail no matter the number of ____ applied.
Endothelial cells
cycles
Extrusion
photoactive polymers
47. 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
in cytoplasm
stress
labile cells
48. Thrombin activates several upstream factors.
Macrophages
Negative Feedback
Plastic
Positive Feedback
49. Drawback of micromaching
Proteases
Collagenase
micromachining
Have to be in a clean room free of dust and biocontamination - expensive
50. Rather than randomly moving - moves in a directed cell migration manner for specific functions.
macrophages - proliferation
Metals
Proteases
chemotaxis