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Characteristics of Life
Is it alive?
What characteristics do all living things have in common?
What Do Living Things Have in
Common?
Made of cells
Made of Cells• All living things
contain one or more cells with genetic material (DNA)
• Cells are organized into structures that carry out certain functions
• Cell -> Tissue -> Organ -> Organ System -> Organism
What Do Living Things Have in
Common?
Made of cells
Require Energy
Require Energy
• Living things must get energy to live– Autotrophs-make their
own energy (like plants)– Heterotrophs-eat other
organisms to get energy
What Do Living Things Have in
Common?
Made of cells
Reproduce
Require Energy
Reproduce• Living things must make more living things for
their species to survive and their genetic material to be passed on to the next generation.
What Do Living Things Have in
Common?
Made of cells
Reproduce
Grow
DevelopRequire Energy
Growth and Development• Growth-increase in the amount of living
material and the formation of new structures
• Development-all the changes that take place during the life of an organism
What Do Living Things Have in
Common?
Made of cells
Reproduce
Grow
DevelopRequire Energy
Adapt and Evolve
Adapt and Evolve• Adaptation-an inherited structure, behavior, or
internal process that allows an organism to respond to their environment and live to reproduce
• Evolution-gradual changes in a species through adaptations over time
The Characteristics of Life
• Things must have ALL of the following to be considered alive:
– Made of Cells
– Require Energy
– Reproduce
– Growth and Development
– Adapt and Evolve