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Life. Content Standard . LS1A Know cells are the basic unit of life Describe life functions performed by cells and living organisms. Life Functions. MRS GREN M: Movement R: Respiration S: Stimulus-Response G: Growth and Development R: Reproduction E: Excrete Waste
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Content Standard • LS1A • Know cells are the basic unit of life • Describe life functions performed by cells and living organisms
Life Functions • MRS GREN • M: Movement • R: Respiration • S: Stimulus-Response • G: Growth and Development • R: Reproduction • E: Excrete Waste • N: (obtain) Nutrients
Movement All living organisms move to: • Find shelter, a mate, food, etc • Escape from predators and other danger • Circulate materials in their bodies/cells • Change the amount of light they get (plants) • Movement in plant cells
Respiration • Using food energy to make other types of energy. • Takes place in the cells of a living organism.
Stimulus-Response • All organisms respond to their environment.
Growth and Development • All organisms grow from a baby to an adult. (get bigger) • Organisms also develop (example: going through puberty)
Reproduction • Making more of ourselves
Excrete Waste • Getting rid of the waste products produced by chemical reactions in our bodies. We do this by breathing out carbon dioxide, producing sweat, urine and feces.
(obtain) Nutrients We need materials for: • Growth • Repair • Energy
How do you know “it”s alive? • In order to be considered living – the organism must have the ability to carry out ALL 7 life functions.