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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. A condensation polymerization results with an ester bond between two reactants and this comes off as a result
negative feedback
Chemotaxis
Thrombin
Water
2. Addition polymerization is commonly initiated by ___ - atoms that have an unpaired electron.
mast cells
Extrusion
Chemotaxis
free radical
3. Process that makes long fibers (fiber drawing) by forcing a fluid through an oriface.
Regeneration/Repair
Extrusion
neutrophils - macrophages
Enzyme cascade
4. Thrombin activates several upstream factors.
standards of known properties
Proteases
Positive Feedback
Hemophilia
5. Drawback of micromaching
Stable cells
autologous
Large
Have to be in a clean room free of dust and biocontamination - expensive
6. Which of polyermization (condensation/free radical) would you choose to obtain a polymer of high molecular weight?
binding
Free Radical
Extrusion
negative feedback
7. Is directed cell migration in response to a concentration gradient of soluble molecules.
Chemotaxis
binding
angiogenesis
Endothelial cells
8. Vascular endothelial growth factor is produced in response to ___ and stimulates ___.
Hemocompatibility
hypoxin - angiogenesis
Mast - Collagen
Damage to cell membranes
9. Resulting from the build up of too much collagen at the surface of injury during the granulation tissue stage of proliferation
Compression molding
Hemocompatibility
scars
Higher
10. Damaged cells at the site of injury (mast cells) release ___ (glycosaminoglycan).
binding
Plastic
heparin
Endothelial cells
11. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
heparin
fibrinogen - factor XIII
Water - oxygen - metal
Mast - Collagen
12. The two types of white blood cells:
neutrophils - macrophages
Mast - Collagen
Phagocytosis
glassy to rubbery
13. The fibrous capsule surrounding a permanent implant is primarily composed of ___ cells and ____ (matrix).
negative feedback
low
Mast - Collagen
Intermolecular bonding - molecular weight
14. Mast cells release this
micromachining
Stable cells
heparin
Extrusion
15. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.
mast cells
phagocytosis
Endothelial cells
Protein Absorption
16. Rather than randomly moving - moves in a directed cell migration manner for specific functions.
Extrusion
Large
Phagocytosis
chemotaxis
17. A ____ implant is designed to elicit specific - intended to host responses.
autologous
hypoxin - angiogenesis
Permanent - replicate
Bioactive
18. The calculation of a polymer's molecular weight (weight average and number number average) is based upon values for ____ and ___.
phagocytosis
Collagenase
Number of polymers - molecular weight of polymer
Calibration
19. This cleaves into fibrinogen which creates fibrin (a sticky enzyme that allows blood to clot)
Thrombin
cycles
Free Radical
photoactive polymers
20. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.
low
Proteases
Proteases
Amide
21. Type of fiber drawing that controls details of a polymer by etching on a microscopic level; thus - controlling mechanical properties as well
autologous
Have to be in a clean room free of dust and biocontamination - expensive
Thrombin
micromachining
22. High conductivity - isotropic - crystalline
Polydesperity index
Metals
autologous
Water - oxygen - metal
23. Keloid scars forms because disfuntion of
alloys - passivation
Collagenase
free radical
Permanent cells
24. This type of feedback creates
labile cells
negative feedback
Polymers - cross linking of polymers
Intermolecular bonding - molecular weight
25. Cells that don't proliferate (neurons)
micromachining
Permanent cells
Proteases
Large
26. _____ establishes a quantitative relationship between measured output values from an instrument and known standards of what is being measured.
Proteases
Damage to cell membranes
Stress
Calibration
27. Process of producing new blood vessels due to a lack on oxygen and thus inducing VEGF.
Macrophages
autologous
Plasticizers
angiogenesis
28. Cells that proliferate rapidly (fibroblasts)
Plasticizers
labile cells
hypoxin - angiogenesis
micromachining
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?
free radical
Compression molding
Mast - Collagen
Stable cells
30. ____ describes the ability of a device to function appropriately in the presence of blood.
mast cells
micromachining
Positive Feedback
Hemocompatibility
31. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
Enzyme cascade
Proteases
Phagocytosis
Metals
32. Activates tissue factors aka endothelial damage
Thrombin
heparin
Damage to cell membranes
Thrombin
33. Are polymer additives used to lower glass transition temperature temperature.
Plasticizers
Enzyme cascade
Thermoplastics
Mast - Collagen
34. List two chemical characteristics of polymers:
Collagenase
Polymers - cross linking of polymers
Intermolecular bonding - molecular weight
free radical
35. Condition in which patients can literally bleed to death.
negative feedback
Polydesperity index
Damage to cell membranes
Hemophilia
36. ____ grafts are derived from the other humans.
Allogeneic
negative feedback
Intermolecular bonding - molecular weight
Proteases
37. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.
fibrinogen - factor XIII
Positive Feedback
alloys - passivation
hypoxin - angiogenesis
38. ____ are enzymes responsible for protein degradation.
Proteases
fibrinogen - factor XIII
negative feedback
standards of known properties
39. 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.
alloys - passivation
Hemocompatibility
Protein Absorption
Thrombin
40. 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.
Higher
negative feedback
autologous
angiogenesis
41. Cells that proliferate slowly over time (aka liver)
Phagocytosis
Thermoplastics
Stable cells
in cytoplasm
42. Collagen ____ is responsible for the gradual gain in mechanical properties of wounded tissue between roughly 4 and 52 weeks post- injury.
Polydesperity index
autologous
cross - linking
Proteases
43. Enzyme that really gets the polmerization going!
Macrophages
negative feedback
Bioactive
Thrombin
44. The process of calibration establishes a quantitative relationship between ____ __ ___ _____ and the direct output of the intstrument (for example time/volume in GPC).
Negative Feedback
free radical
Collagenase/Remodelling
standards of known properties
45. Polyethylene oxide grafting to biomaterials was developed to prevent coagulation by interfering with/preventing ___ ___.
chemotaxis
Compression molding
Protein Absorption
low
46. ____- are polymers that can be repeatedly softened by heating and hardened by cooling.
Thermoplastics
Extrusion
phagocytosis
Permanent cells
47. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.
Thermoplastics
Negative Feedback
Chemotaxis
Water
48. Enzymes (proteins) are not activated only when they are in contact with this type of cells
Water
Compression molding
Endothelial cells
Plasticizers
49. Foreign body giants cells are produced by fusion of ___.
micromachining
Metals
Macrophages
Allogeneic
50. Higher Molecular weight degrades slower than ____ MW
free radical
Lower
Plastic
Proteases