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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
heparin
micromachining
Collagenase/Remodelling
Collagenase
2. The trigger for activation of enzymes (anything but endothelial cells!)
Macrophages
Metals
binding
macrophages - proliferation
3. ____ is a measurement that characterizes the breadth of the distribution of a polymer's molecular weight.
cross - linking
heparin
micromachining
Polydesperity index
4. Classify the following polymers into appropriate families based on their bond structure i.e. the polymer is an example of poly ____.
neutrophils - macrophages
Endothelial cells
Negative Feedback
Amide
5. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
Endothelial cells
Water - oxygen - metal
in cytoplasm
Hemocompatibility
6. Cells that don't proliferate (neurons)
binding
macrophages - proliferation
autologous
Permanent cells
7. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.
phagocytosis
neutrophils - macrophages
Allogeneic
standards of known properties
8. Which of polyermization (condensation/free radical) would you choose to obtain a polymer of high molecular weight?
Free Radical
Calibration
Thrombin
Hemophilia
9. ____ binds to anti- thrombin III (thrombin inhibitor) and increases its potency 1000- fold.
low
Polydesperity index
Heparin
Phagocytosis
10. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.
glassy to rubbery
Plastic
Enzyme cascade
fibrinogen - factor XIII
11. High conductivity - isotropic - crystalline
Stable cells
Calibration
mast cells
Metals
12. The two types of white blood cells:
neutrophils - macrophages
heparin
angiogenesis
mast cells
13. Mast cells release this
heparin
chemotaxis
Extrusion
Calibration
14. Are polymer additives used to lower glass transition temperature temperature.
Plasticizers
labile cells
Hemophilia
Higher
15. ____ are enzymes responsible for protein degradation.
Proteases
Free Radical
Intermolecular bonding - molecular weight
heparin
16. A ____ implant is designed to elicit specific - intended to host responses.
Hemocompatibility
Heparin
Bioactive
Plasticizers
17. ______ Molecular weight degrades slower than lower MW
Polymers - cross linking of polymers
in cytoplasm
phagocytosis
Higher
18. Activates tissue factors aka endothelial damage
Endothelial cells
Large
Damage to cell membranes
Free Radical
19. Enzymes (proteins) are not activated only when they are in contact with this type of cells
Lower
Protein Absorption
Endothelial cells
cross - linking
20. Higher Molecular weight degrades slower than ____ MW
Lower
Calibration
Bioactive
Permanent cells
21. Is directed cell migration in response to a concentration gradient of soluble molecules.
binding
alloys - passivation
Plasticizers
Chemotaxis
22. ____ describes the ability of a device to function appropriately in the presence of blood.
Free Radical
Hemocompatibility
angiogenesis
Plasticizers
23. 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.
Bioactive
autologous
glassy to rubbery
photoactive polymers
24. Foreign body giants cells are produced by fusion of ___.
Stress
Macrophages
free radical
Thrombin
25. A molecular pathway in which the product of each reaction catalyzes the subsequent reaction.
negative feedback
angiogenesis
Enzyme cascade
Amide
26. Cells that proliferate rapidly (fibroblasts)
Water
labile cells
neutrophils - macrophages
chemotaxis
27. ____- are polymers that can be repeatedly softened by heating and hardened by cooling.
Thermoplastics
Positive Feedback
glassy to rubbery
macrophages - proliferation
28. Damaged cells at the site of injury (mast cells) release ___ (glycosaminoglycan).
heparin
Higher
Hemocompatibility
Number of polymers - molecular weight of polymer
29. 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?
Collagenase/Remodelling
Compression molding
macrophages - proliferation
Proteases
30. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure
cycles
Stress
Number of polymers - molecular weight of polymer
autologous
31. No healing of damage neurons is the result of ____ cells that are not able to ____.
negative feedback
Collagenase/Remodelling
Intermolecular bonding - molecular weight
Permanent - replicate
32. Keloid scars forms because disfuntion of
Mast - Collagen
Amide
Water
Collagenase
33. Collagen ____ is responsible for the gradual gain in mechanical properties of wounded tissue between roughly 4 and 52 weeks post- injury.
Phagocytosis
Proteases
cross - linking
Hemocompatibility
34. This type of feedback creates
autologous
stress
negative feedback
Bioactive
35. Process of producing new blood vessels due to a lack on oxygen and thus inducing VEGF.
binding
angiogenesis
stress
Negative Feedback
36. List two chemical characteristics of polymers:
Compression molding
Intermolecular bonding - molecular weight
Higher
Damage to cell membranes
37. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
Negative Feedback
Phagocytosis
heparin
Heparin
38. Deformation that cannot be recovered once the load is removed from the material is ____ deformation.
Plasticizers
Plastic
cross - linking
Positive Feedback
39. 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
heparin
Phagocytosis
autologous
40. Enzyme that really gets the polmerization going!
Thrombin
Intermolecular bonding - molecular weight
cycles
Enzyme cascade
41. A condensation polymerization results with an ester bond between two reactants and this comes off as a result
Metals
Polymers - cross linking of polymers
alloys - passivation
Water
42. Thrombin activates several upstream factors.
glassy to rubbery
Positive Feedback
in cytoplasm
autologous
43. Cells that proliferate slowly over time (aka liver)
Polymers - cross linking of polymers
Stable cells
cycles
binding
44. What type of materials are used for photolithography? (substrate is a silicon wafer - built up material is some _____ ____ )
hypoxin - angiogenesis
Water
autologous
photoactive polymers
45. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.
Stress
mast cells
Damage to cell membranes
Proteases
46. Disfunction of _____ (cells) producing collagenase during the _____ phase of wound healing may form Keloid scars.
Thrombin
macrophages - proliferation
in cytoplasm
Polydesperity index
47. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.
Plastic
Permanent cells
Regeneration/Repair
stress
48. Condition in which patients can literally bleed to death.
heparin
Protein Absorption
Damage to cell membranes
Hemophilia
49. Where are the tissue factors found when they're inactivated
mast cells
glassy to rubbery
Collagenase
in cytoplasm
50. Two things needed in the end product of the creation of a scab
Lower
photoactive polymers
Mast - Collagen
Polymers - cross linking of polymers