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| dissecting, good for large molecules |
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| Scanning Electron Microscope |
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| makes objects 3-D, fine structures |
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| Transmission Electron Microscope |
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| Great detail, uses no light but electron vaccum |
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| same measurement multiple times |
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| how well data fits the line, the closer to one the better |
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smallest unit of life
all cells come from other cells |
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| how substances move in/out of cell |
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keeps DNA safe
nuclear envelope
nucleolus
DNA in cytoplasm |
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| site of protein synthesis |
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| modifies new polypeptide bond |
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| Makes lipids/inactivates toxins |
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passive
down concentration gradient
small/nonpolar |
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h20 movement
due to tonicity |
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facilitated diffusion
active transport |
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high concentration to low concentration
enter/leave cell through channel |
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against concentration gradient
uses ATP |
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larger concentration inside cell than outside of cell.
If a cell is placed into a hypotonic solution, the water will flow into the cell causing it to swell and possibly lyse |
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larger concentration outside cell than inside cell
If a cell is placed into a hypertonic solution, the water will flow out of the cell causing it to crenate |
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hypotonic
swells and explodes |
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benedicts
pos: yellow
neg: no change |
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Potassium Iodide
pos: black
neg: no change |
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silver nitrate
pos: cloudy
neg: no change |
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