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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. Deformation that cannot be recovered once the load is removed from the material is ____ deformation.
Plastic
Thrombin
Permanent cells
Proteases
2. The two types of white blood cells:
Calibration
Stable cells
Mast - Collagen
neutrophils - macrophages
3. 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?
Enzyme cascade
Compression molding
Collagenase
autologous
4. What type of materials are used for photolithography? (substrate is a silicon wafer - built up material is some _____ ____ )
heparin
Thrombin
photoactive polymers
Proteases
5. The calculation of a polymer's molecular weight (weight average and number number average) is based upon values for ____ and ___.
macrophages - proliferation
Have to be in a clean room free of dust and biocontamination - expensive
Amide
Number of polymers - molecular weight of polymer
6. Cells that proliferate slowly over time (aka liver)
angiogenesis
Stable cells
Stress
Large
7. Keloid scars forms because disfuntion of
glassy to rubbery
Hemocompatibility
Collagenase
Damage to cell membranes
8. ____ binds to anti- thrombin III (thrombin inhibitor) and increases its potency 1000- fold.
Calibration
in cytoplasm
standards of known properties
Heparin
9. Addition polymerization is commonly initiated by ___ - atoms that have an unpaired electron.
free radical
cross - linking
Collagenase/Remodelling
Endothelial cells
10. Essentially all metallic biomaterials are ____ - comprised of two or more metals. One of these metals is selected for its ability to support _____ - the formation of a stable oxide layer that resists further corrosion.
Regeneration/Repair
alloys - passivation
Plasticizers
Phagocytosis
11. Are polymer additives used to lower glass transition temperature temperature.
Amide
Polymers - cross linking of polymers
Negative Feedback
Plasticizers
12. Rather than randomly moving - moves in a directed cell migration manner for specific functions.
chemotaxis
Extrusion
autologous
neutrophils - macrophages
13. ____ are enzymes responsible for protein degradation.
Proteases
Bioactive
Hemophilia
Calibration
14. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure
mast cells
Proteases
Extrusion
Stress
15. The glass transition temperature of a poymer at which a polymer transforms from a ____ state to a ___ state.
Bioactive
glassy to rubbery
Positive Feedback
in cytoplasm
16. Cells that proliferate rapidly (fibroblasts)
Polydesperity index
labile cells
hypoxin - angiogenesis
Metals
17. Is directed cell migration in response to a concentration gradient of soluble molecules.
Chemotaxis
Hemocompatibility
cycles
Positive Feedback
18. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
Water - oxygen - metal
standards of known properties
Lower
Regeneration/Repair
19. This type of feedback creates
hypoxin - angiogenesis
Collagenase
neutrophils - macrophages
negative feedback
20. Which of polyermization (condensation/free radical) would you choose to obtain a polymer of high molecular weight?
phagocytosis
Free Radical
Have to be in a clean room free of dust and biocontamination - expensive
Higher
21. A ____ implant is designed to elicit specific - intended to host responses.
Regeneration/Repair
Bioactive
labile cells
Protein Absorption
22. Where are the tissue factors found when they're inactivated
in cytoplasm
phagocytosis
Negative Feedback
Chemotaxis
23. Activates tissue factors aka endothelial damage
Macrophages
Collagenase/Remodelling
Damage to cell membranes
Free Radical
24. The trigger for activation of enzymes (anything but endothelial cells!)
Extrusion
binding
chemotaxis
alloys - passivation
25. A molecular pathway in which the product of each reaction catalyzes the subsequent reaction.
Negative Feedback
Enzyme cascade
angiogenesis
Polydesperity index
26. Drawback of micromaching
Have to be in a clean room free of dust and biocontamination - expensive
heparin
Thermoplastics
Number of polymers - molecular weight of polymer
27. List two chemical characteristics of polymers:
Intermolecular bonding - molecular weight
Permanent - replicate
micromachining
free radical
28. Condition in which patients can literally bleed to death.
Large
Hemophilia
Collagenase/Remodelling
Proteases
29. ____ grafts are derived from the other humans.
Hemocompatibility
Allogeneic
Water - oxygen - metal
cross - linking
30. Foreign body giants cells are produced by fusion of ___.
glassy to rubbery
Permanent - replicate
Compression molding
Macrophages
31. 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.
Polymers - cross linking of polymers
autologous
macrophages - proliferation
standards of known properties
32. A condensation polymerization results with an ester bond between two reactants and this comes off as a result
Amide
Stress
Allogeneic
Water
33. No healing of damage neurons is the result of ____ cells that are not able to ____.
negative feedback
Mast - Collagen
hypoxin - angiogenesis
Permanent - replicate
34. Classify the following polymers into appropriate families based on their bond structure i.e. the polymer is an example of poly ____.
Stable cells
Amide
Free Radical
chemotaxis
35. This cleaves into fibrinogen which creates fibrin (a sticky enzyme that allows blood to clot)
Bioactive
Thrombin
binding
cycles
36. What types of wound healing results from injury with inflammation?
macrophages - proliferation
phagocytosis
Water - oxygen - metal
Regeneration/Repair
37. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.
Allogeneic
Thrombin
fibrinogen - factor XIII
Polydesperity index
38. Higher Molecular weight degrades slower than ____ MW
fibrinogen - factor XIII
photoactive polymers
free radical
Lower
39. ____- are polymers that can be repeatedly softened by heating and hardened by cooling.
Proteases
Negative Feedback
micromachining
Thermoplastics
40. 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
Have to be in a clean room free of dust and biocontamination - expensive
autologous
Polymers - cross linking of polymers
41. Type of fiber drawing that controls details of a polymer by etching on a microscopic level; thus - controlling mechanical properties as well
negative feedback
Water
Hemophilia
micromachining
42. Two things needed in the end product of the creation of a scab
Proteases
glassy to rubbery
Water - oxygen - metal
Polymers - cross linking of polymers
43. The process of calibration establishes a quantitative relationship between ____ __ ___ _____ and the direct output of the intstrument (for example time/volume in GPC).
Enzyme cascade
heparin
standards of known properties
Hemocompatibility
44. Process of producing new blood vessels due to a lack on oxygen and thus inducing VEGF.
mast cells
angiogenesis
Permanent cells
Collagenase
45. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
Free Radical
Bioactive
scars
Phagocytosis
46. Cells that don't proliferate (neurons)
in cytoplasm
micromachining
Permanent cells
Hemocompatibility
47. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.
Negative Feedback
Mast - Collagen
phagocytosis
labile cells
48. Vascular endothelial growth factor is produced in response to ___ and stimulates ___.
Macrophages
hypoxin - angiogenesis
Positive Feedback
Extrusion
49. Collagen ____ is responsible for the gradual gain in mechanical properties of wounded tissue between roughly 4 and 52 weeks post- injury.
labile cells
Damage to cell membranes
Protein Absorption
cross - linking
50. Enzymes (proteins) are not activated only when they are in contact with this type of cells
Compression molding
Stress
Thrombin
Endothelial cells