SA 9th Grade- Biology Test- 1
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45 terms
Terms | Definitions |
|---|---|
 adaptation | inherited changes that occur over time that help the species survive |
| biology | the organized study of living things and their interactions with the natural and physical environment |
| development | changes an organism undergoes in its lifetime before reaching its adult form |
| growth | process that results in mass being added to an organism; may include formation of new cells and new structures |
| homeostasis | regulation of an organism's internal environment to maintain conditions needed for life |
| organism | anything that has once had all the characteristics of life |
| organization | orderly structure shown by living things |
| reproduction | production of offspring |
| response | organism's reaction to stimulus |
| species | group of organisms that can interbreed and produce fertile offspring |
| stimulus | any change in an organism's internal or external environment that causes the organism to react |
| ethics | a set of values; the study of right and wrong; must be decided by all of society |
| forensics | the field of study that applies science to matters of legal interest and other areas such as archaeology |
| metric system | measurment system whose divisions are powers of ten |
| peer review | a process in which the procedures used during an experiment may be repeated and results are evaluated by scientists who are in the same field or are conducting similar research |
| science | a body of knowledge based on the study of nature |
| SI | system of measurments used by scientists; abbreviation of the International System of Units |
| theory | explanation of a natural phenomenon based on many observations and investigations over time |
| control group | in a controlled experiment, the group not receiving the factor being tested |
| constant | a factor that remains fixed during an experiment while the independent and dependent variables change |
| data | quantitative or qualitative info gained from scientific observation |
| dependent variable | factor being measured in a controlled experiment; its value changes because of changes to the independent variable |
| experiment | procedure performed in a controlled setting to test a hypothesis and collect precise data |
| experimental group | in a controlled experiment, the group receiving the factor being tested |
| hypothesis | testable explanation of a situation |
| independent variable | the one factor that can be changed |
| inference | assumption based on prior experience |
| observation | orderly, direct information gathering about a natural phenomenon |
| safety symbol | logo representing a specific danger such as radioactivity, electrical or biological hazard, or irritants that may be present in a lab activity or field investigation |
| scientific method | a seris of problem solving procedures that biologists and other scientists use to gather information to solve problems |
| serendipity | occurence of accidental or unexpected but fortunate outcomes |
| energy | the ability to do work or make things move; it powers all life processes |
| evolution | the gradual change in the characteristics of a species over time |
| inductive reasoning | produces a general rule based on a set of observations; most common type of scientific method used in developing a hypothesis |
| deductive reasoning | suggests that something may be true about a specific case from known general rules; "if...then" reasoning used after forming a hypothesis |
| independent variable | the one factor that is being tested; the condition in an experiment that is changed |
| quantitative | numerical data; the counts or measurments that result from controlled experiments; data is used to make tables or graphs |
| qualitative | observational data; written descriptions of what scientists observed; some phenomena can not be measured; also called descriptive |
| theory | results when a hypothesis is repeatedly verified over time and through many separate experiments |
| law | facts of nature as recognized by scientists |
| technology | scientific research to solve society's needs and problems |
| pseudoscience | areas of study that try to imitate science, often driven by cultural or commercial goals; there is no specific evidence to prove it |
| environmental biologist | biologists who work to prevent plants and animals from becoming extinct |
| bioengineering | the study of cells, DNA, and living systems to discover new medical treatments |
| biotechnology | the study of living systems in order to design mechanical devices |
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