Zusammenfassung der Ressource
Frage 1
Frage
Resolution is the ability of an optical instrument to..
Antworten
-
Magnify the image of an object up to 20 times its actual size.
-
Penetrate a sample with varying light intensities in order for the viewer to see the image more brightly.
-
Produce an image that represents fine detail in high clarity and definition.
Frage 2
Frage
Label the light microscope.
Antworten
-
Eyepiece
-
Nosepiece
-
Stage
-
Coarse adjustment
-
Fine adjustment
-
Iris diaphragm
-
Light source
-
Eyepiece
-
Nosepiece
-
Stage
-
Coarse adjustment
-
Fine adjustment
-
Iris diaphragm
-
Light source
-
Eyepiece
-
Nosepiece
-
Stage
-
Coarse adjustment
-
Fine adjustment
-
Iris diaphragm
-
Light source
-
Eyepiece
-
Nosepiece
-
Stage
-
Coarse adjustment
-
Fine adjustment
-
Iris diaphragm
-
Light source
-
Eyepiece
-
Nosepiece
-
Stage
-
Coarse adjustment
-
Fine adjustment
-
Iris diaphragm
-
Light source
-
Eyepiece
-
Nosepiece
-
Stage
-
Coarse adjustment
-
Fine adjustment
-
Iris diaphragm
-
Light source
-
Eyepiece
-
Nosepiece
-
Stage
-
Coarse adjustment
-
Fine adjustment
-
Iris diaphragm
-
Light source
Frage 3
Frage
Select the statement which correctly describes the relationship between magnification, image size, and actual size.
Antworten
-
Magnification = image size x actual size
-
Image size = magnification x actual size
-
Actual size = magnification x image size
Frage 4
Frage
[blank_start]Laser scanning[blank_end] microscopes work by scanning an object with very high resolution using a laser beam, which is analysed by a computer to form an [blank_start]image[blank_end]. While expensive, these microscopes produce high r[blank_start]esolution[blank_end], high c[blank_start]ontrast[blank_end] images that can also be [blank_start]3[blank_end]-dimensional.
Antworten
-
Laser scanning
-
image
-
esolution
-
ontrast
-
3
Frage 5
Frage
[blank_start]Electron[blank_end] microscopes emit a wavelength of radiation of about [blank_start]0.004[blank_end] nanometers, resulting in a very high [blank_start]resolution[blank_end]. They are also able to [blank_start]magnify[blank_end] images much more than other types of microscope. During the process, [blank_start]electrons[blank_end] are 'spat out' by a [blank_start]cathode[blank_end]. Instead of a glass lens to focus the image in other types of microscope, the [blank_start]electron[blank_end] microscope uses a [blank_start]magnet[blank_end]. When the electrons reach the sample, some pass [blank_start]through[blank_end] it and some bounce off, depending on whether the microscope is [blank_start]scanning[blank_end] (SEM) or [blank_start]transmission[blank_end] (TEM).
Antworten
-
Electron
-
0.004
-
resolution
-
magnify
-
cathode
-
electrons
-
magnet
-
electron
-
through
-
scanning
-
transmission
Frage 6
Frage
What type of microscope was used to take this picture?
Antworten
-
Optical (light) microscope
-
Scanning electron microscope
-
Transmission electron microscope
-
Laser scanning microscope
Frage 7
Frage
What type of microscope was used to take this image?
Antworten
-
Optical (light) microscope
-
Scanning electron microscope
-
Transmission electron microscope
-
Laser scanning microscope
Frage 8
Frage
Which of the following are techniques for preparing a sample for microscopy?
Check all that apply.
Antworten
-
Dehydration
-
Embedding in wax
-
Making sections
-
Treating
-
Salting
Frage 9
Frage
A microscope of magnification x4000 takes a picture of a cell. In the image, the cell is 2cm wide. What is the actual width of the cell?