| A | B |
|---|
| science | is an organized way of using evidence to learn about the natural world |
| observation | involves using ore or more senses - sight, hearing, touch, smell and sometimes taste - to gather information |
| data | information gathered from observations |
| inference | is a logical interpretation based on prior knowledge and experience |
| hypothesis | a possible explanation for a set of observations or an answer to a scientific question |
| spontaneous generation | the idea that life can arise from non living matter |
| controlled experiment | an experiment in which only one variable is changed at a time. All other variables should be kept unchanged, or controlled. |
| manipulated variable | the variable that is deliberately changed in an experiment. |
| responding variable | the variable that is obeserved and that changes to the manipulated variable |
| theory | well tested explanation that unifies a broad range of obesrvations |
| biology | the science that seeks to understand the living world |
| cell | is a collection of living matter enclosed by a barrier that separates the cell from its surroundings |
| sexual reproduction | two cells from different parents unite to produce the first cell of the new organism |
| asexual reproduction | the new organism has a single parent |
| metabolism | the combination of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes |
| homeostasis | the process by which organisms keep their internal conditions relatively stable |
| evolve | a group of organisms can changes over time |
| metric system | a decimal system of measurement whose units are based on certain physical standards and are scaled to multiples of 10 |
| microscope | are devices that produce magnified images of structures that are too small to see with an unaided eye |
| compound light microscope | produce magnified images by focusing visible light rays |
| electron microscope | focus beams of electrons on speciments |
| cell culture | the cell is able to reproduce so that a group of cells develops from the single original cell |
| cell fractionation | a technique to separate the different parts of the cell |
