Ch. 1 Flashcards
(19 cards)
Scientific study of life
Biology
Genetic material that organisms inherit from their parents
Deoxyribonucleic acid (DNA)
Signal to which an organism responds
Stimulus
Type of reproduction in which cells from two parents unite to form the first cell of a new organism.
Sexual reproduction
Process of reproduction involving a single parent that results in offspring that are genetically identical to the parent
Asexual reproduction
Relatively constant internal physical and chemical conditions that organisms maintain
Homeostasis
The combination of chemical reactions through which an organism builds up or breaks down materials
Metabolism
Part of earth in which life exists including land, water, and air or atmosphere.
Biosphere
Well-tested explanation that unifies a broad range of observations and hypotheses, and enables scientists to make accurate predictions about new situations.
Theory
Particular preference or point of view that is personal, rather than scientific
Bias
Organized way of gathering and analyzing evidence about the natural wold
Science
Process of noticing and describing events or processes in a careful, orderly way
Observation
A logical interpretation based on prior knowledge and experience
Inference
Possible explanation for a set of observations or possible answers to a scientific question
Hypothesis
Experiment in which only one variable is changed
Controlled experiment
Factor in a controlled experiment that is deliberately changed; also called manipulated variable
Independent variable
Variable that is observed and that changes in response to the independent variable; also called the responding variable
Dependent variable
Group in an experiment that is exposed to the same conditions as the experimental group except for one independent
Control group
Evidence; information gathered from obsrervations
Data
