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Characteristics of Life

Characteristics of Life. Six Characteristics all living things share. Name some living things. Why are they living?. 1. Cellular Organization. Organism – any living thing Cell – basic unit of structure and function in all living things Unicellular – one celled

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Characteristics of Life

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  1. Characteristics of Life Six Characteristics all living things share

  2. Name some living things. Why are they living?

  3. 1. Cellular Organization • Organism – any living thing • Cell – basic unit of structure and function in all living things • Unicellular – one celled • Multicellular – more than one cell

  4. Chemical Compound Purpose • Water • Carbohydrates • Proteins and Lipids • Nucleic Acids • Medium for chemical reactions • Cell’s main energy source • Building materials of cell structures • Genetic Material 2. Similar Chemical Make Up

  5. 3. Energy Use We use energy for everything!!!

  6. 4. Response to surroundings • Stimulus – any change in an organism’s surroundings that causes a reaction • Response – an action or change in behavior

  7. 5. Growth and Development • Growth means getting bigger or adding parts • Development means there is a change that occurs over the organism’s life

  8. 6. Reproduction • The ability to produce offspring that are similar to parents

  9. Francesco Redi • Spontaneous Generation – the idea that living things come from non-living things • Biogenesis - Life comes from preexisting life

  10. Louis Pasteur Strengthened Redi’s findings that there has to be life to make more life. Living things can NOT come from non-living things (especially after one boils them to death).

  11. Needs of living things

  12. Four Basic Needs • Water • Food • Autotroph - organisms that make their own food (plants) • Heterotroph – organisms that obtain food by eating others (most)

  13. Four Basic Needs • Living Space • Stable Internal Conditions • Homeostasis – the maintenance of stable internal conditions

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