AS Biology 1 : cell structure and Microscopy

  • Created by: C
  • Created on: 21-09-12 17:09
What is the function of the nucleus?
To store cell DNA
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What is the function of the ribosomes?
Site of protein synthesis
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What is the role of the Golgi apparatus?
to process and package proteins (add carbohydrate chains) ready for use outside the cell
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What do Golgi vesicles do?
Transport proteins to the plasma membrane for use outside the cell
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What is the maximum effective magnification of a light microscope?
x1500
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What is the maximum resolution power of a light microscope?
200 nm
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What are the two types of electron microscopes?
(TEM) Transmission electron microscope- for seeing inside cell membrane bound organelles and (SEM) Scanning electron microscope - seeing the surface of cells.
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TEM: What is their maximum effective magnification?
x500,000
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TEM: What is their maximum resolution?
0.1 - 0.2 nm
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SEM: What is their maximum effective magnification?
x100,000
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SEM: What is their maximum resolution
SAME AS TEM = 0.1 - 0.2 nm
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What is magnification?
This is the number of times larger the image is compared to the actual size of the object
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What is resolution?
This is the ability to see two objects that are close together as separate objects.
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What is the function of the nucleolus?
produce ribosomes
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What is the function of the RER? (Rough endoplasmic reticulum)
To transport and manufacture proteins
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What is the function of the SER? (Smooth endoplasmic reticulum)
To manufacture lipids (fats and oils) and transport them
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What is the function of the mitochondrion?
This is the site of aerobic respiration which produces ATP- (releases energy)
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What is the role of lysosomes?
These CONTAIN digestive enzymes
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What is the function of the chloroplast?
This is the site of photosynthesis
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What are the roles of the centriole?
These produce spindle fibres which move chromosomes in nuclear division
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What is the function of the Flagella?
It is responsible for cell movement
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What is the role of the Cilia?
It is responsible for the movement of liquids over the surface of the cell and contain microtubules
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Card 2

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What is the function of the ribosomes?

Back

Site of protein synthesis

Card 3

Front

What is the role of the Golgi apparatus?

Back

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Card 4

Front

What do Golgi vesicles do?

Back

Preview of the front of card 4

Card 5

Front

What is the maximum effective magnification of a light microscope?

Back

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