The Characteristics of Life

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What is life?
- Metabolism-carry out chemical reactions to live
- Reproduction-all living organisms can produce offspring
Continuity of life/ biogenesis?

All livings things arise from preexisting living things
Five characteristics?
- Sensitivity
- Nutrition
- Organisation
- Reproduction
- Excretion
Sensitivity?

Is the ability of an organism to detect and react to changes in its external and internal environment
Nutrition?
- The way an organism obtains and uses food
- Autotroph- makes food
- Heterotroph-consumes food, unable to make it
Organisation?
- All living organisms are composed of cells
- Cells-tissue-organ-system-living organism-population=species-community-biosphere
Reproduction?

The formation of new living organisms of the same species
Excretion?

The removal of metabolic waste from the body