[AS]-Biology (OCR) at University Of Birmingham | Flashcards & Summaries

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Lernmaterialien für [AS]-Biology (OCR) an der University of Birmingham

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What is magnification?
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The amount of times larger an object is compared to the actual size of the object
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What is diffraction?
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Spreading out light waves as light close to the edge of an object or new medium
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What are the two lenses in a compound microscope?
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Objective lens and eyepiece lens
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How is a squash slide prepared?
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Sample is suspended in a liquid such as water. A cover slip is then gently placed on top.

E.g soft samples such as root hair tips.
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To convert from mm to um 
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Divide by 1000
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What is Resolution?
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The ability to see detail 
( two objects as separate entities)
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How is a smear slide prepared?
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Liquid sample is dropped onto one end of the slide. Another slide is dragged along the surface of the slide to spread the sample. A cover slip is then placed on top.

E.g  blood
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What are the two types of electron microscopes?
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Transmission electron microscope(TEM) and Scanning electron microscope(SEM)
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To convert from mm to nm
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Multiply by 1000000
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What is the magnification equation?
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TESTE DEIN WISSEN
Magnification = image size/Actual size
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What is the magnification of the eyepiece lens?
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 * 10 magnification
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Electron microscope
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The electron microscope uses a beam of electrons instead of light. Because the wavelength of electrons are shorter than the wavelength of light, the electron microscope has better resolution and can see cell ultrastructure. However, it requires harsh and extensive sample preparation...
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Beispielhafte Karteikarten für deinen [AS]-Biology (OCR) Kurs an der University of Birmingham - von Kommilitonen auf StudySmarter erstellt!

Q:
What is magnification?
A:
The amount of times larger an object is compared to the actual size of the object
Q:
What is diffraction?
A:
Spreading out light waves as light close to the edge of an object or new medium
Q:
What are the two lenses in a compound microscope?
A:
Objective lens and eyepiece lens
Q:
How is a squash slide prepared?
A:
Sample is suspended in a liquid such as water. A cover slip is then gently placed on top.

E.g soft samples such as root hair tips.
Q:
To convert from mm to um 
A:
Divide by 1000
Mehr Karteikarten anzeigen
Q:
What is Resolution?
A:
The ability to see detail 
( two objects as separate entities)
Q:
How is a smear slide prepared?
A:
Liquid sample is dropped onto one end of the slide. Another slide is dragged along the surface of the slide to spread the sample. A cover slip is then placed on top.

E.g  blood
Q:
What are the two types of electron microscopes?
A:
Transmission electron microscope(TEM) and Scanning electron microscope(SEM)
Q:
To convert from mm to nm
A:
Multiply by 1000000
Q:
What is the magnification equation?
A:
Magnification = image size/Actual size
Q:
What is the magnification of the eyepiece lens?
A:
 * 10 magnification
Q:
Electron microscope
A:
The electron microscope uses a beam of electrons instead of light. Because the wavelength of electrons are shorter than the wavelength of light, the electron microscope has better resolution and can see cell ultrastructure. However, it requires harsh and extensive sample preparation...
[AS]-Biology (OCR)

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