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Chapter 1

Biology and You

TermDefinition
biology the study of life
cell basic unit of life
reproduction process by which organisms make more of their own kind from one generation to the next
metabolism the sum of all of the chemical reactions carried out in an organism (obtain and use energy)
heredity the passing of traits from parent to offspring
homeostasis the maintenance of a stable internal environment
evolution change over time
species a group of genetically similar organisms that can produce fertile offspring
ecology interactions of organisms with one another and with the nonliving parts of their environment
observation act of noting or perceiving objects or events using the five senses
hypothesis an educated guess
prediction expected outcome of a test, assuming the hypothesis is correct
experiment a planned procedure to test a hypothesis
control group the group in the experiment that receives no treatment
independent variable the factor that is changed in an experiment
dependent variable the variable that is measured in an experiment
theory a set of related hypotheses that have been tested and confirmed many times by many scientists
Created by: jyoung271