Introduction to Biology

2. organism's reaction to a stimulus
5. Assumption based on prior experience.
6. A set of values
9. The process that results in mass being added to an organism; may include formation of new cells and new structures
10. Variable The one factor that can be changed in a controlled experiment; is the factor tested and affects the experiment outcome.
12. production of offspring
14. A group of organisms that can interbreed and produce fertile offspring
15. methods A series of problem-solving procedures that might include observations and include forming a hypothesis, experimenting, gathering and analyzing data, and drawing conclusions
17. Group in a controlled experiment, the group not receiving the factor being tested
18. The science of life; examines how living things interact, how systems function, and how they function of a molecular level.
19. Any change in an organisms's internal or external environment that causes the organism to react.
21. Procedure performed in a controlled setting to test a hypothesis and collect precise data
22. Inherited characteristics of a species that develops over time in response to an environment factor, enabling the species to survive

1. Orderly structure shown by living things
3. Orderly, direct information gathering about a natural pehnomenon.
4. Testable explanation of a situation
7. a body of knowledge based on the study of nature and its physical setting
8. Regulation of an organism's internal environment to maintain conditions needed for life.
11. Changes an organism undergoes in its lifetime before reaching its adult form
13. Variable The factor being measured in a controlled experiment; its value changes because of changes to the independent variable.
16. A factor that remains fixed during an experiment while the independent and dependent variables change.
20. Quantitative or qualitative information gained from scientific investigation
23. An explanation of a natural phenomenon based on many observations and investigations over time.