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Published byDella Stevens Modified over 9 years ago
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1.5 Characteristics of Life Unity in Diversity
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1. ORDER All organisms exhibit complex organization
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2. Regulation The environment outside an organism may change markedly, but regulatory mechanisms maintain an organisms’ internal environments within limits that sustain life.
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homeostasis The ability to maintain a relatively constant internal environment. EXAMPLES: body temp. Blood sugar levels Water levels pH
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Kidney used for water regulation Gets rid of wastes
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3. Growth and development Each organism has a pattern of growth and development characteristic of its species.
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4. Energy Utilization Organisms take in energy and transform it to perform all of life’s activities. -metabolism -photosynthesis
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5. Response to the environment All organisms respond to environmental stimuli. Eye spot (responds to light)
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I’m outa here!
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6. Reproduction DNA lends itself to precise replication, and all organisms reproduce their own kind.
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7. Evolution Reproduction underlies the capacity of species to change (evolve) over time.
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