| Term | Definition |
|---|
| Biology | study of life |
| Organization | order with an organisms internal and external parts and interaction with the living world |
| Cell | smallest unit that performs all life's processes |
| Unicellular | one celled |
| Multicellular | many celled |
| Organs | structures that carry out specialized jobs within an organ system |
| Tissues | groups of cells that have similar abilities and that allow the organ to function |
| Organelles | tiny structures that carry out functions necessary for the cell to stay alive |
| Biological Molecules | chemical compounds that provide physical structure and that bring about movement , energy use, and other cellular functions |
| Homeostasis | maintenance of a stable level of internal conditions even though environmental conditions are constantly changing |
| Metabolism | sum of all the chemical reactions that take in and transform energy and materials from the environment |
| Cell division | formation of two new cells from and existing cell |
| Development | process by which an organism becomes a mature adult |
| Reproduction | when organisms produce new organisms like themselves |
| Gene | segment of DNA that contains the instructions for a single trait of an organism. |
| Kingdoms | another system of grouping organisms divides all life into six major catagories |
| Ecology | branch of biology that studies organisms interacting with each other and with the environment |
| Ecosystems | communities of living species and their physical environments |
| Evolution | process when the inherited characteristics within populations change over generations, such that genetically distinct populations and new species can develop |
| Natural Selection | organisms that have certain favorable traits are better able to survive and reproduce successfully than organism that lack these traits |
| Adaptations | traits that improve an individuals ability to survive and reproduce |
| Scientific Method | when science is characterized by an organized approach to learn how the natural world works |
| Observation | act of perceiving a natural occurrence that causes someone to pose a question |
| Hypothesis | proposed explanation for the way a particular aspect of the natural world works |
| Prediction | statement that forecasts what would happen in a test situation if the hypotheses were true |
| Experiment | used to test a hypothesis and its predictions |
| Control Group | provides a normal standard against which the biologist can compare results of the experimental group |
| Experimental Group | identical to control group except is has an independent variable |
| Independent Variable | manipulated variable |
| Dependent variable | responding variable because of the independent variables effect |
| Theory | set of related hypotheses is confirmed to be true many times, and it can explain a great amount of data |
| Peer Review | scientists who are experts in the field anonymously read and critique that research paper. |
| Compound Light Microscope | microscope that shines light through a specimen and has two lenses to magnify an image |
| Eye piece | magnifies the image, usually ten times |
| Objective Lens | enlarges the image of the specimen |
| Stage | platform that supports a slide holding the specimen |
| Light Source | light bulb that provides light for viewing an image |
| Magnification | increase of an objects apparent size |
| Nose piece | structure that holds the set of objective lens |
| Resolution | power to show details clearly in an image |
| Scanning Electron Microscope | microscope that produces an enlarges 3-d image of an object by using a beam of electrons rather than light |
| Transmission Electron Microscope | a microscope that transmits a beams of electrons through a very thing slice of specimen that can magnify up to 200,000 times |
| Metric System | a decimal based standard system of measurement that is used by scientist |
| Base Units | one of the fundamental units of measurement that describes length, mass, time, and other quantities and from which other units are derived |
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