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Microbiology Lab Practical Microscopy
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Questions in this quiz (17)
1[blank_start]Magnification[blank_end] is the amount that an image is enlarged.
- AMagnification
2[blank_start]Contrast[blank_end] is the degree to which an image details stand out against the background. We can use [blank_start]stains[blank_end] to increase this.
- AContrast
- Bstains
3[blank_start]Resolution[blank_end] or [blank_start]resolving[blank_end] [blank_start]power[blank_end] is the ability of a lens to separate between small objects that are close together.
- AResolution
- Bresolving
- Cpower
4You change from one objective to another and the specimen remains nearly in focus. Your lens is considered [blank_start]parfocal[blank_end].
- Aparfocal
5You change objectives and the specimen stays in the center of the field of view. Your lens is [blank_start]parcentral[blank_end].
- Aparcentral
6The [blank_start]working[blank_end] [blank_start]distance[blank_end] is the distance between the tip of an objective and the stage. For scanning this number = [blank_start]35 mm[blank_end] for low power = [blank_start]18 mm[blank_end] for high power = [blank_start]4 mm[blank_end] and for oil immersion = [blank_start]1.8 mm[blank_end]
- Aworking
- Bdistance
- C35 mm
- D18 mm
- E4 mm
- F1.8 mm
7[blank_start]Immersion oil[blank_end] has the same [blank_start]refractive index[blank_end] as glass. This prevents the loss of light from [blank_start]refraction[blank_end] and adds to [blank_start]resolution[blank_end].
- Arefractive index
- BImmersion oil
- Crefraction
- Dresolution
8[blank_start]Depth[blank_end] [blank_start]of[blank_end] [blank_start]field[blank_end] is the thickness of plane or focus. When viewing threads, a [blank_start]large[blank_end] depth of field will allow you to see all threads in focus and a [blank_start]small[blank_end] depth of field will only focus one thread.
- ADepth
- Bof
- Cfield
- Dlarge
- Esmall
9Wavelengths of light may be [blank_start]reflected[blank_end] back from an object to the eye to determine perceived color.
- Areflected
10[blank_start]Transmission[blank_end] is the passage of light through an object.
- ATransmission
11[blank_start]Absorption[blank_end] is when light rays neither pass through or bounce off, but are taken up by the object and reemitted at [blank_start]longer[blank_end] wavelengths.
- AAbsorption
- Blonger
12[blank_start]Refraction[blank_end] is the bending of light as it passes from one medium to another of different density.
- ARefraction
13The [blank_start]light[blank_end] [blank_start]microscope[blank_end] has a max magnification of 2000X and can be used to view living or non living specimens.
- Alight
- Bmicroscope
14The [blank_start]electron microscope[blank_end] has a max magnification of 1,000,000X and can only be used to view [blank_start]non living[blank_end] specimens. The [blank_start]TEM[blank_end] is used to view the inside of a specimen and the [blank_start]SEM[blank_end] is used to view external structures.
- Aelectron microscope
- Bnon living
- CTEM
- DSEM
15The [blank_start]stereo dissecting[blank_end] microscope is used to view large specimens like frogs worms and insects and has a max mag of 45X
- Astereo dissecting
16A higher [blank_start]numerical aperture[blank_end] means greater resolution. For scanning = [blank_start]0.1[blank_end] for low power = [blank_start]0.25[blank_end] for high power = [blank_start]0.65[blank_end] for oil immersion = [blank_start]1.25[blank_end]
- Anumerical aperture
- B0.1
- C0.25
- D0.65
- E1.25
17A [blank_start]wavelength[blank_end] is the distance between 2 adjacent crests or troughs. Better microscopes use [blank_start]shorter[blank_end] wavelengths to improve [blank_start]resolution[blank_end] and have special filters to block out [blank_start]longer[blank_end] wavelengths.
- Awavelength
- Bshorter
- Cresolution
- Dlonger
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- Description
- Quiz on Microbiology Lab Practical Microscopy, created by Meagan Mueller on 31/10/2016.
- Author
- Meagan Mueller
- Language
- English
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