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Created by:
lexiewright on August 17, 2011
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24 terms
Terms | Definitions |
|---|---|
 Agar | a complex gelatinous carbohydrate obtained from seaweeds used as a culture medium for bacteria |
| balance | a scale for weighing |
| beaker | a flat-bottomed cylindrical container, usually with a pouring lip, especially one used in a laboratory. |
| centi | Used commonly in units of measurement., one hundred |
| compound light microscope | microscope that allows light to pass through a speceimen and uses two lenses to form an image |
| coverslip | a small and very thing piece of glass used to cover the specimen on a microscope slide |
| deci | one tenths gram |
| dependent variable | factor in an experiment that a scientist wants to observe which may change because of the manipulated variable;also kown as a responding variable |
| Erlenmyer flask | a flask having a wide base, narrow neck, and conical form, convenient in laboratory experimentation for swirling liquids by hand. |
| florence flask | used for heating substances that need to be heated evenly. bulbous bottom allows the heat to distribute through the liquid more evenly. mostly used in distillation experiments |
| forceps | resembles tweezers; used to pick up or hold tissue or small items |
| graduated cylinder | instrument used to measure volume of a liquid |
| homeostasis | process by which organisms maintain a relatively stable internal environment |
| independent variable | factor in an experiment that a scientist purposely changes; also know as a responding variable |
| kilo- | one thousand grams |
| metric system | decimal system of measurement based on certain physical standards and scaled on multiples of 10 |
| milli- | one-thousandth |
| Petri dish | a shallow, circular, glass or plastic dish with a loose-fitting cover over the top and sides, used for culturing bacteria and other microorganisms |
| pipette | measuring instrument consisting of a graduated glass tube used to measure or transfer precise volumes of a liquid by drawing the liquid up into the tube |
| scanning electron microscope | a microscope that produces an enlarged, three-dimensional image of an object by using a beam of electrons rather than light |
| slide | Small glass plate on which specimen are placed for viewing |
| spontaneous generation | hypothesis (disproven) stating that life could arise from nonliving matter |
| test tube | a narrow container for holding and mixing chemicals |
| transmission electron microscope | an electron microscope that transmits a beam through a specimen, detecting its electrons and forming a highly magnified image on a screen |
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