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25 Cards in this Set
- Front
- Back
Cell Theory (3 things) |
1. All living things come from cells |
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1st used the word "cell" |
Robert Hooke |
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Prokaryote |
First (before nucleus) |
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Eukaryote |
Second (made from groups of prokaryotes) |
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Cell wall |
• Outer layer of cell |
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Cell membrane |
• outer layer of an animal cell |
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Cytoplasm |
gooey insides of the cell |
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Cytoskeleton |
• protein fingers inside cell that support the cell and help move things around |
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Centrioles |
• helps organize process of cell division in animal cells |
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Unicellular |
• One cell is the whole organism |
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Multicellular |
• An organism has more than one cell |
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Three primary lenses |
Objective Lenses |
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One secondary lens |
Ocular Lens |
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Compound Light Microscope |
These microscopes are light illuminated. The image seen with this type of microscope is two dimensional. This microscope is the most commonly used. You can view individual cells, even living ones. It has high magnification. However, it has a low resolution. (The one we use in class) |
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Scanning Electron Microscope |
This microscope uses electron illumination. The image is seen in 3-D. It has high magnification and high resolution. The specimen is coated in gold and the electrons bounce off to give you and exterior view of the specimen. The pictures are in black and white. |
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Transmission Electron Microscope |
This microscope is electron illuminated. This gives a 2-D view. Thin slices of specimen are obtained. The electron beams pass through this. It has high magnification and high resolution. |
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Cellular Transport (2 types) |
1)Active - ATP is required for transport |
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Active Transport (2 types) |
1)Protein directed - proteins form passages through the membrane to allow specific molecules through |
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Endocytosis (2 types) |
Phagocytosis - eating |
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Concentration |
Mass of solute in a given volume of liquid. |
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Osmosis |
The diffusion of water through the cell membrane |
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Diffusion |
Passive transport where molecules of various types follow normal flow (high to low) |
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Hypotonic
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• Solution has more solutes than the cell
• More water exits the cell • Cell shrivels and possibly dies |
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Hypertonic
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• Solution has fewer solutes than the cell
• More water enters the cell • Cell expands and may burst |
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Isotonic |
•A solution that has the same concentration of particles as the cell. |