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| where ideas come from (curiousity) |
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| willing to accept different ideas |
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| scientific journals; sharing knowledge and new ideas |
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| time tested concept that makes useful and dependable predictions about the natural world; dominant view |
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| ethical or moral viewpoints |
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| particular preference or point of view that is personal |
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| pipettes and gradiated cylinders |
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| measure and transfer liquids |
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| researches have developed several kinds to study small organisms |
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| compound light microscope |
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| observe livving organisms |
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| made improvements to compout light microscope; microbiology |
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| Limit of Compound light microscope |
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| images lose detail at .2 micrometers |
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microscopes that don't require stain
(killing the organism) |
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| phase contrast; dark field |
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| electromagnetic microscopes |
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| use electromagnents to bend streams of electrons; used to study viruses |
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| Transmission Electron Microscope |
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| beam of electrons magnifies the image onto a flourescent screen at the bottom of a microscope; beam can also expose photofilm |
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| Scanning Electron Microscope |
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| small beam of electrons scans back and forth across specimen's surface; electrons bounce off and are picked up by detectors to form image on tv screen; shows 3D images |
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| Limitations of electromagnetic microscopes |
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| stained; cut into thin slices |
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| specimens have to be in a vaccuum (dead; like other) |
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| helps parts of a cell be more visible |
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| separating one part of something from others |
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| can spin a tube up to 20,000 times per minute |
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| breaking apart cells in a blender |
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| insert material into a living cell |
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| single cell is placed in a dish that contains the nutrients that the cell needs; cell repoduces to form a population |
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