SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
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. The two types of white blood cells:
scars
Protein Absorption
fibrinogen - factor XIII
neutrophils - macrophages
2. Where are the tissue factors found when they're inactivated
Permanent cells
in cytoplasm
phagocytosis
Enzyme cascade
3. The fatigue limit is value of applied stress below which a material will not fail no matter the number of ____ applied.
cycles
Plastic
Stress
hypoxin - angiogenesis
4. Type of fiber drawing that controls details of a polymer by etching on a microscopic level; thus - controlling mechanical properties as well
autologous
Compression molding
Stable cells
micromachining
5. The fibrous capsule surrounding a permanent implant is primarily composed of ___ cells and ____ (matrix).
neutrophils - macrophages
Damage to cell membranes
Mast - Collagen
Compression molding
6. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.
mast cells
Intermolecular bonding - molecular weight
Enzyme cascade
photoactive polymers
7. ______ Molecular weight degrades slower than lower MW
Higher
cross - linking
Negative Feedback
Protein Absorption
8. Two things needed in the end product of the creation of a scab
Polymers - cross linking of polymers
Macrophages
mast cells
Water - oxygen - metal
9. ____ is a measurement that characterizes the breadth of the distribution of a polymer's molecular weight.
Macrophages
Collagenase
Hemocompatibility
Polydesperity index
10. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .
Positive Feedback
Water - oxygen - metal
glassy to rubbery
labile cells
11. What type of materials are used for photolithography? (substrate is a silicon wafer - built up material is some _____ ____ )
autologous
photoactive polymers
phagocytosis
Thermoplastics
12. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure
Intermolecular bonding - molecular weight
Macrophages
Free Radical
Stress
13. ____- are polymers that can be repeatedly softened by heating and hardened by cooling.
labile cells
alloys - passivation
Thermoplastics
Positive Feedback
14. Activates tissue factors aka endothelial damage
glassy to rubbery
Permanent - replicate
Hemocompatibility
Damage to cell membranes
15. Foreign body giants cells are produced by fusion of ___.
phagocytosis
Macrophages
Higher
Have to be in a clean room free of dust and biocontamination - expensive
16. 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.
autologous
Thrombin
alloys - passivation
Plastic
17. Mast cells release this
fibrinogen - factor XIII
Calibration
heparin
binding
18. Classify the following polymers into appropriate families based on their bond structure i.e. the polymer is an example of poly ____.
phagocytosis
Have to be in a clean room free of dust and biocontamination - expensive
Amide
Number of polymers - molecular weight of polymer
19. Cells that proliferate slowly over time (aka liver)
cross - linking
Stable cells
Higher
Intermolecular bonding - molecular weight
20. ____ are enzymes responsible for protein degradation.
Hemocompatibility
Permanent cells
Damage to cell membranes
Proteases
21. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.
cross - linking
Thrombin
Macrophages
stress
22. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.
Water - oxygen - metal
Phagocytosis
Protein Absorption
Enzyme cascade
23. This type of feedback creates
Water
negative feedback
Permanent cells
Chemotaxis
24. Enzymes (proteins) are not activated only when they are in contact with this type of cells
Phagocytosis
Damage to cell membranes
Endothelial cells
low
25. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.
fibrinogen - factor XIII
photoactive polymers
negative feedback
Stress
26. List two chemical characteristics of polymers:
chemotaxis
Intermolecular bonding - molecular weight
Thermoplastics
Permanent cells
27. Damaged cells at the site of injury (mast cells) release ___ (glycosaminoglycan).
Mast - Collagen
heparin
Bioactive
Proteases
28. Higher Molecular weight degrades slower than ____ MW
Proteases
Lower
scars
in cytoplasm
29. Condition in which patients can literally bleed to death.
angiogenesis
Lower
Water - oxygen - metal
Hemophilia
30. Keloid scars form due to disfunction of ____.
Plastic
Collagenase/Remodelling
chemotaxis
Endothelial cells
31. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.
low
binding
angiogenesis
Permanent - replicate
32. Polyethylene oxide grafting to biomaterials was developed to prevent coagulation by interfering with/preventing ___ ___.
Polydesperity index
Collagenase
Protein Absorption
Permanent cells
33. The calculation of a polymer's molecular weight (weight average and number number average) is based upon values for ____ and ___.
Permanent - replicate
Number of polymers - molecular weight of polymer
Enzyme cascade
Higher
34. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.
cycles
Endothelial cells
phagocytosis
neutrophils - macrophages
35. Which of polyermization (condensation/free radical) would you choose to obtain a polymer of high molecular weight?
Permanent cells
Free Radical
Extrusion
Large
36. The process of calibration establishes a quantitative relationship between ____ __ ___ _____ and the direct output of the intstrument (for example time/volume in GPC).
Polydesperity index
standards of known properties
Collagenase/Remodelling
negative feedback
37. This cleaves into fibrinogen which creates fibrin (a sticky enzyme that allows blood to clot)
Collagenase
Thrombin
Higher
Polydesperity index
38. Rather than randomly moving - moves in a directed cell migration manner for specific functions.
Regeneration/Repair
Damage to cell membranes
chemotaxis
Permanent - replicate
39. A condensation polymerization results with an ester bond between two reactants and this comes off as a result
Water
Heparin
Plastic
Stress
40. A ____ implant is designed to elicit specific - intended to host responses.
Bioactive
Water - oxygen - metal
Stress
chemotaxis
41. Cells that proliferate rapidly (fibroblasts)
labile cells
Polydesperity index
stress
Negative Feedback
42. No healing of damage neurons is the result of ____ cells that are not able to ____.
Permanent cells
autologous
Stress
Permanent - replicate
43. The trigger for activation of enzymes (anything but endothelial cells!)
in cytoplasm
Permanent - replicate
binding
Bioactive
44. Are polymer additives used to lower glass transition temperature temperature.
cross - linking
Plasticizers
Proteases
Stress
45. 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
Higher
Thrombin
Damage to cell membranes
46. The glass transition temperature of a poymer at which a polymer transforms from a ____ state to a ___ state.
Protein Absorption
glassy to rubbery
Thermoplastics
Proteases
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.
Negative Feedback
Large
Proteases
Hemocompatibility
48. ____ grafts are derived from the other humans.
Plasticizers
Polydesperity index
Allogeneic
Mast - Collagen
49. A molecular pathway in which the product of each reaction catalyzes the subsequent reaction.
Polymers - cross linking of polymers
Enzyme cascade
Hemocompatibility
Endothelial cells
50. Addition polymerization is commonly initiated by ___ - atoms that have an unpaired electron.
Positive Feedback
free radical
Regeneration/Repair
Endothelial cells