Vocab Flashcards
Observation
Process if gathering information in a careful orderly way.
DNA
Nucleic acid that contains the sugar deoxyribose
Evolution
Changes over time
Theory
A well tested explanation that unifies a broad range of observations
Metabolism
Sum of all chemical reactions within an organism
Homeostasis
Process by which and organism maintains a stable internal environment.
Hypothesis
A scientific explanation for a set of observations
Controlled variable
The factor in an experiment that the scientist keeps the same.
Spontaneous generation
A hypothesis that states that life can arise from nonliving matter
Stimulis
The signal to which and organism responds
Responding variable
A factor in an experiment that the scientist wants to observe
Inference
A logical explanation based on prior knowledge and experience.
Controlled experiment
Allows a scientist to isolate and test a single variable.
Cell specialization
Separate roles for each type of cell in a multicellular
Manipulated variable
Factor in an experiment that the scientist purposefully changes
