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Chapter 1
Vocabulary
16
Biology
9th Grade
08/22/2010

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Term
Science
Definition
An organized way of using evidence to learn about the natural world.
Term
Observation
Definition
The first step scientists use in the process of gathering information about events or processes.
Term
Data
Definition
The information gathered from observations.
Term
Hypothesis
Definition
A proposed scientific explanation for a set of observations. Created using prior knowlwdge, logical inference and creative/informed imagination.
Term
Spontaneous Generation
Definition
The idea that life could emerge from non-living matter. Has been shown to be incorrect.
Term
Controlled Experiment
Definition
An experiment in which only one variable is changed at a time. All other variables are left constant.
Term
Manipulated Variable
Definition
The variable ina na experiment that is deliberately changed.
Term
Responding Variable
Definition
The variable in an experiment that is observed and that changes in response to the manipulated variable.
Term
Theory
Definition
A hypothesis that has been tested repeatedly so that there is enough evidence supporting it may become a theory. Example: Evolution
Term
Biology
Definition
The science that employs the scientific method to study LIVING things.
Term
Metric System
Definition
Based on units of 10. The standard in the scientific world. Used when performing and recording scientific data.
Term
Light Microscope
Definition
Produces a magnified image by focusing visible light rays.
Term
Electron Microscope
Definition
Produce a magnified image by focusing beams of electrons. Magnifies the image up to 1000 times more than a light microscope.
Term
Compound light microscope
Definition
Allows light to pass thru an image an creates that image thru two lenses. Magnifies images up to 1000 times actual size.
Term
Cell Culture
Definition
Develops from a single cell in a small plate full of nutrient agar called a petri dish. It grows into a colony of identical cells. these cells can then be used in numerous ways to study cell function, etc.
Term
Cell Fractionation
Definition
Used to separate parts of the cell. Uses a blender, of sorts, to break up the cells. Then these parts are placed in a centrifuge which spins the parts very fast so they separate based on size.
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