Flashcards: Chapter 1
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Created by:
huberka on August 30, 2010
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Groups:
Home, Hollenbeck Middle School, Ms. Huber's Biology Vocab
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Terms | Definitions |
|---|---|
 Science | Organized way of using evidence to learn about the natural world; also, the body of knowledge that scientist have built up after years of using this process. |
| Observation | Use of one or more of the senses-sight, hearing, touch, smell, and sometimes taste-to gather information. |
| Data | Evidence; information gathered from observations. |
| Inference | Logical interpretation based on prior knowledge and experience. |
| Hypothesis | possible explaination for a set of observations or possible awnser to a scientific question. |
| Spontaneous Generation | Hypothesis stating that life could arise from nonliving matter. |
| Controlled Experiment | A test of the effect of a single variable by changing it while keeping all variables the same. |
| Manipulated Variable | Factor in an experiment that a scientist purposely changes; also known as independent variable. |
| Responding Variable | Factor in an experiment that a scientist wants to observe, which may change in response to the manipulated variable; also known as a dependent variable. |
| Theory | Well-tested explanation that unifies a broad range of observations. |
| Biology | Science that seeks the understanding of the living world. |
| Cell | Collection of living matter enclosed by a barrier that separates the cell from its surroundings; basic unit of all forms of life. |
| Sexual Reproduction | Process by which cells from two different parents unite to produce the first cell of a new organism. |
| Asexual Reproduction | Process by which a single parent reproduces by itself. |
| Metabolism | Set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes. |
| Stimulus | A signal to which an organism responds. |
| Evolution | Change in a kind o fan organism over time; process by which modern organisms have descended from ancient organisms. |
| Homeostasis | Process by which organisms maintain a relatively stable internal environment. |
| Metric System | Decimal system of measurement based on certain physical standards and scaled on multiples of 10. |
| Microscope | Device that prodices magnified images of structures that are too small to see with the unaided eye. |
| Compound Light Microscope | Microscope that allows light to pass through a specimen and uses two lenses to form an image. |
| Electron Microscope | Microscope that forms an image by focusing beams of electrons onto a specimen. |
| Cell Culture | Group of cells grown in a nutrient solution from a single original cell. |
| Cell Fractionation | Technique in which cells are broken into pieces and the different cell parts are separated. |
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