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1-3 Studying Life

Characteristics of Life

TermDefinition
Spontaneous Generation Idea that life comes from nonliving things
Biogenesis Theory- living things come from living things
Biology Study of life
Cell Basic unit of life
Unicellular Made of 1 cell
Multicellular Made of many cells
Sexual Reproduction Two parents
Asexual Reproduction One parent
Heredity Passing of traits from parents to offspring
Growth Increase in size
Development Changes in size and shape of an organism
Differentiation Cells perform different functions
Metabolism All of the chemical reactions in an organism
Stimulus Signal an organism responds to
Response Reaction to a stimulus
Homeostasis maintaining a stable internal environment
Evolution Change over time
Organism Single Living Thing
Population Same species living in the same area
Community All of the living things in the same area
Ecosystem Living and Nonliving things in one area
Biospher Part of Earth that contains life
Molecule Smallest unit of matter
Groups of Cells Tissues, organs, and organ systems
Francisco Redi meat and maggot experiment; proved living things come from other living things
Spallanzani Gravy experiment correctly to disprove spontaneous generation
Louis Pasteur S-neck flask experiment to disprove spontaneous generation
Created by: payneds
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