Cells and Microscopy

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  • Created by: joshd
  • Created on: 08-03-14 08:30
What is in an Animal Cell?
Nucleus, Cytoplasm, Cell Membrane, Mitochondria
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What is the nucleus?
Contains DNA that controls what the cell does.
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What is the cytoplasm?
Gel-like substance where most of the chemical reactions happen.
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What is the cell membrane?
Holds the cell together and controls what goes in and out
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What are mitochondria?
These are where most of the respiration reactions occur. Respiration releases energy that the cell needs to work.
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What is also in a Plant Cell?
Rigid Cell Wall, Large Vacuole, Chloroplasts
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What is the Rigid Cell Wall?
Made of cellulose, gives extra support for the cell.
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What is the Large Vacuole?
Contains cell sap, a weak solution of sugar and salts.
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What is Chloroplasts?
Where photosynthesis occurs. They contain a green substance call chlorophyll.
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What do bacterial cells not have?
A nucleus.
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What is in Bacterial Cells?
Chromosomal DNA, Plasmids, Flagellum, Cell Wall
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What is Chromosomal DNA?
Controls the cell's activities and replication. It floats free in the cytoplasm.
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What are Plasmids?
Small loops of extra DNA that aren't part of the chromosome. Contain genes for things like drug resistance and can be passed between bacteria.
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What is the Flagellum?
A long, hair-like structure that rotates to make the bacterium move. NOT always present.
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What is the cell supported by?
A cell wall.
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What do microscopes allow us to do?
See things that can't be seen with the naked eye.
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Name the different types of microscopes, when they were invented and what they allow us to see.
Light microscopes were invented in the 1590s and they allow us to see things like nuclei, chloroplasts and mitochondria. Electron microscopes were invented in the 1930s and allow us to see the internal structure of smaller things like mit. chl. pla.
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How do you calculate magnification?
magnification = length of image / length of specimen
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What is magnification?
How much bigger an image is than the specimen.
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Other cards in this set

Card 2

Front

What is the nucleus?

Back

Contains DNA that controls what the cell does.

Card 3

Front

What is the cytoplasm?

Back

Preview of the front of card 3

Card 4

Front

What is the cell membrane?

Back

Preview of the front of card 4

Card 5

Front

What are mitochondria?

Back

Preview of the front of card 5
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