Science/ESL/EC-6 (set 1)
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Created by:
jeloccisano on August 11, 2011
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42 terms
Terms | Definitions |
|---|---|
 When a blender is used to break cells into parts. | Fractionation |
| Devices that spin thousands of times per minute. | Centrifuge |
| Separating a specimen, body or cell, into its parts. | Dissection |
| Done with a microscope and special miniaturized tools. Used to remove parts of or dissect a cell. | Micro dissection |
| One cell is placed in a dish, and nutrients are supplied so that the cell can reproduce. | Cell Cultures |
| Used with light microscopes to highlight structures. | Staining specimens |
| Adjusting a piece of laboratory equipment for accuracy in measurements. | Calibration |
| Commonly used to collect behavioral data. | Direct observation |
| Based on glass lenses focusing a light beam, specimen in air or liquid environment, maximum power or resolution of about 1000 times | Light microscopes |
| Single eyepiece to look through, keep both eyes open and keep the unfocused eye not looking through the single eyepiece. | Compound monocular light microscope |
| Two eyepieces to simultaneously look through, keep both eyes open, better suited for larger objects. | Stereoscopic binocular microscope |
| Allows higher resolution because the oil prevents scattering of the light rays that pass through the specimen. | Oil-immersion objective lens |
| This type of mounting of a specimen can be used to observe motion. | Wet |
| Based on electromagnetically focused electron beam, specimen in a vacuum, maximum power (resolution) of about 1000 times that of light microscopes. | Electron microscopes |
| An extremely thin slice of specimen is used. The electron beam travels through the slice. | Transmission electron microscope |
| Slicing is not needed. The electron beam bounces off the surface of the specimen to form a three-dimensional image of the surface. | Scanning electron microscope |
| A beam with pans on each end that is suspended exactly in the middle on a pivot point. | Beam Balance |
| Calibrated by placing a known, calibrated mass on the balance. The balance is then adjusted so that the reading matches the mass of the sample. | Triple beam balances |
| Used to accurately measure volume of liquids. | Graduated cylinder |
| Lowest part of the meniscus determines | Volume |
| This is the curved surface at the top of a liquid being measured in a graduated cylinder. | Meniscus |
| Pyrex beakers that can be marked for measure and or transferring fluids. | Glass beakers |
| Pyrex beakers that have large base that becomes smaller towards the top, ending in narrow neck. Used to prevent spillage, good when experimenting with heat. | Erlenmeyer flasks |
| How close a measurement is to the true value is called... | Accuracy |
| Being able to reproduce the same measurement is called... | Precision |
| Include all the digits in a measurement that are known accurately and one more digit that is estimated. | Significant figures |
| Science uses this system in measurement because it is based on the decimal system, making converting between these units. | Metric |
| A quantity of matter. | Mass |
| Mass is measured in | Grams |
| The measure of the space a liquid occupies. | Volume of liquids |
| Is measured by cubic centimeters. | Volume of solids |
| Factors are fractions or rations of equivalent measures | Conversion factors |
| 1 ft = | 12 inches |
| 1 inch = | 2.54 cm |
| 1 kg= | 2.2 lb |
| Temperature, length, mass, and volume | Common measurement equipment |
| These are used to measure larger volumes | Graduated cylinders |
| Used for the largest volumes to measure | Beakers |
| Measuring small volumes | Pipettes |
| This is used in a balance beam to obtain the final balance | Slider |
| These are used for accurate measurements | Balance beams |
| Converting F to C is | C=5-32 |
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