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15 Cards in this Set
- Front
- Back
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organelles
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subcellular structures
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plasma membrane
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functions as a selective barrier that allows sufficent passage of nutrients and oxygen and waste
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resolving power
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measure of clarity in image
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prokaryotic cells
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no nucleus, genetic material is concentrated in the nucleoid, but no membrane separates this region from the rest of the cell
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light microscopes
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refract (bend the light to magnify and project image
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ultracentrifuges
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powerful machines that spin to split cells into different organelles
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nucleoid
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the place in a prokaryotic cell where the DNA is concentrated, without a membrane that sparates tbis region from the rest of the cell.
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cytosol
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semifluid medium in which organelles are suspended
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nucleus
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contains most of the genes that control the cell
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eukaryotic cell
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true nucleus enclosed in a nuclear envelope.
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scanning electron microscope (SEM)
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useful in studying the sruface of the specimen
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electron microscope (EM)
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focuses a beam of electrons; have to kill cells
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cytoplasm
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the entire region b/w tthe nucleus and the emebrane bounding the cell
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transmission electron microscope (TEM)
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mainly to study internal structure of cells
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cell fractionation
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takes the cell apart so that thier individual functions can be studied.
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