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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. Is directed cell migration in response to a concentration gradient of soluble molecules.
Positive Feedback
Regeneration/Repair
neutrophils - macrophages
Chemotaxis
2. ______ Molecular weight degrades slower than lower MW
angiogenesis
Permanent cells
Higher
Polymers - cross linking of polymers
3. Enzymes (proteins) are not activated only when they are in contact with this type of cells
Endothelial cells
standards of known properties
Heparin
angiogenesis
4. Condition in which patients can literally bleed to death.
Hemophilia
standards of known properties
Metals
Phagocytosis
5. Drawback of micromaching
Have to be in a clean room free of dust and biocontamination - expensive
Plastic
mast cells
Proteases
6. ____ describes the ability of a device to function appropriately in the presence of blood.
Plasticizers
Heparin
Free Radical
Hemocompatibility
7. Cells that don't proliferate (neurons)
Protein Absorption
Thermoplastics
Permanent cells
Have to be in a clean room free of dust and biocontamination - expensive
8. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.
Lower
in cytoplasm
Polymers - cross linking of polymers
phagocytosis
9. ____ binds to anti- thrombin III (thrombin inhibitor) and increases its potency 1000- fold.
labile cells
Macrophages
stress
Heparin
10. 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?
Extrusion
Compression molding
angiogenesis
heparin
11. 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.
Collagenase
Permanent - replicate
Compression molding
Large
12. Activates tissue factors aka endothelial damage
Damage to cell membranes
cross - linking
Allogeneic
Proteases
13. Addition polymerization is commonly initiated by ___ - atoms that have an unpaired electron.
labile cells
Water - oxygen - metal
Chemotaxis
free radical
14. Foreign body giants cells are produced by fusion of ___.
Hemophilia
Mast - Collagen
Macrophages
Extrusion
15. Process that makes long fibers (fiber drawing) by forcing a fluid through an oriface.
mast cells
Hemophilia
Extrusion
Thermoplastics
16. _____ establishes a quantitative relationship between measured output values from an instrument and known standards of what is being measured.
Calibration
free radical
Plastic
Allogeneic
17. Keloid scars forms because disfuntion of
Higher
Metals
Enzyme cascade
Collagenase
18. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure
Higher
Stress
Permanent - replicate
Free Radical
19. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
Plasticizers
Protein Absorption
Chemotaxis
Phagocytosis
20. Collagen ____ is responsible for the gradual gain in mechanical properties of wounded tissue between roughly 4 and 52 weeks post- injury.
Positive Feedback
cross - linking
Endothelial cells
macrophages - proliferation
21. Classify the following polymers into appropriate families based on their bond structure i.e. the polymer is an example of poly ____.
Stress
Permanent cells
Heparin
Amide
22. Damaged cells at the site of injury (mast cells) release ___ (glycosaminoglycan).
Metals
photoactive polymers
Regeneration/Repair
heparin
23. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.
fibrinogen - factor XIII
Protein Absorption
stress
Enzyme cascade
24. The two types of white blood cells:
Protein Absorption
neutrophils - macrophages
Positive Feedback
cycles
25. Keloid scars form due to disfunction of ____.
Mast - Collagen
glassy to rubbery
cycles
Collagenase/Remodelling
26. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.
free radical
heparin
low
stress
27. No healing of damage neurons is the result of ____ cells that are not able to ____.
cross - linking
chemotaxis
Permanent - replicate
in cytoplasm
28. What type of materials are used for photolithography? (substrate is a silicon wafer - built up material is some _____ ____ )
autologous
Polymers - cross linking of polymers
photoactive polymers
Protein Absorption
29. Enzyme that really gets the polmerization going!
Compression molding
Intermolecular bonding - molecular weight
phagocytosis
Thrombin
30. Which of polyermization (condensation/free radical) would you choose to obtain a polymer of high molecular weight?
phagocytosis
neutrophils - macrophages
standards of known properties
Free Radical
31. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.
Permanent cells
cross - linking
mast cells
macrophages - proliferation
32. Are polymer additives used to lower glass transition temperature temperature.
standards of known properties
Higher
Protein Absorption
Plasticizers
33. Type of fiber drawing that controls details of a polymer by etching on a microscopic level; thus - controlling mechanical properties as well
angiogenesis
Bioactive
alloys - passivation
micromachining
34. Mast cells release this
Hemocompatibility
Stress
heparin
Plastic
35. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.
Proteases
Protein Absorption
Heparin
Negative Feedback
36. The glass transition temperature of a poymer at which a polymer transforms from a ____ state to a ___ state.
negative feedback
neutrophils - macrophages
glassy to rubbery
cross - linking
37. High conductivity - isotropic - crystalline
Metals
Water
Collagenase
angiogenesis
38. List two chemical characteristics of polymers:
Calibration
free radical
Intermolecular bonding - molecular weight
Bioactive
39. ____ is a measurement that characterizes the breadth of the distribution of a polymer's molecular weight.
Positive Feedback
Polydesperity index
micromachining
mast cells
40. The process of calibration establishes a quantitative relationship between ____ __ ___ _____ and the direct output of the intstrument (for example time/volume in GPC).
Mast - Collagen
Water
standards of known properties
Stable cells
41. ____- are polymers that can be repeatedly softened by heating and hardened by cooling.
Have to be in a clean room free of dust and biocontamination - expensive
fibrinogen - factor XIII
in cytoplasm
Thermoplastics
42. Rather than randomly moving - moves in a directed cell migration manner for specific functions.
chemotaxis
neutrophils - macrophages
Polymers - cross linking of polymers
phagocytosis
43. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
Water
Have to be in a clean room free of dust and biocontamination - expensive
Water - oxygen - metal
micromachining
44. What types of wound healing results from injury with inflammation?
angiogenesis
Lower
Regeneration/Repair
Hemophilia
45. Where are the tissue factors found when they're inactivated
Hemophilia
Plasticizers
Collagenase/Remodelling
in cytoplasm
46. A condensation polymerization results with an ester bond between two reactants and this comes off as a result
Negative Feedback
Water
Endothelial cells
Hemocompatibility
47. The trigger for activation of enzymes (anything but endothelial cells!)
binding
macrophages - proliferation
alloys - passivation
chemotaxis
48. Disfunction of _____ (cells) producing collagenase during the _____ phase of wound healing may form Keloid scars.
macrophages - proliferation
heparin
in cytoplasm
glassy to rubbery
49. The fatigue limit is value of applied stress below which a material will not fail no matter the number of ____ applied.
cycles
Regeneration/Repair
Phagocytosis
Heparin
50. Vascular endothelial growth factor is produced in response to ___ and stimulates ___.
Calibration
hypoxin - angiogenesis
mast cells
Hemophilia