| A | B |
|---|
| science | organized way of using evidence to learn about the natural world. |
| 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 explantion for a set of observations or possible answer to a scientific question |
| theory | well tested explanation that unifies a broad range of observations |
| 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 al other variables the same |
| variable | factor in an experiment that can change |
| dependent variable | factor in an experiemnt that a scientist wants to observe, which may change because of the manipulating variable; also known as a responding variable |
| independent variable | factor in an experiment that a scientist puposely changes; also known as a responding variable |
| biology | sciencee that seeks to understand the living world |
| cell | collection of living matter enclosed by a barrier that seperates the cell from its surroundings; basic unit of all forms of life |
| sexual reproduction | process by which two cells from differents unite to produce the first cell of a new organism |
| asexual reproduction | process by which a single parent produces itself |
| metabolism | set of chemical reactions through which an organis builds up or breaks down materials as it carries out its life processes. |
| catabolism | the ability to break complex molecules down into smaller molecules. |
| Anabolism | the ability to build complex molecules. |
| photosynthesis | process by which plants and some other organisms use light energy to power chemical reactions that convert water and carbon dioxide into oxygen and high- energy carbohydrates such as sugars and starches. |
| homeostasis | process by which organisms maintain relitively stable internal enviroment. |
| evolution | change in a kind of organism over time; process by which modern organisms have descended from ancient organisms. |
| ectothermic | cold blooded. |
| limit of reslution | the maximum magnification before an object becomes blurry. |
| natural law | an observation of a natural event. |
