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Published byAmelia Blankenship Modified over 9 years ago
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Characteristics of Living Things Chapter 1-3
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There are 8 characteristics that apply to all living things. If one or more doesn’t apply, it’s not truly ‘living’ ◦ Organism – individual living thing
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1. Living things are based on the universal genetic code Organisms use DNA to store and transmit information DNA is passed on to offspring
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2. Living things grow and develop Organisms start as a single cell and develop into adults in a particular way
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3. Living things respond to their environment Organisms detect and respond to stimuli ◦ Stimulus – Signal an organism responds to, like temperature, chemicals, sunlight, etc.
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4. Living things are made up of cells Cells are the basic unit of all living things ◦ Unicellular – organisms made up of only one cell ◦ Multicellular – organisms made up of two or more cells We are made up of trillions of cells
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5. Living things evolve Over time, a species may change in response to their environment
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6. Living things obtain and use materials and energy All organism need energy and nutrients to survive ◦ Metabolism – all of the chemical reactions occurring in an organism at one time
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7. Living things maintain a stable internal environment Conditions, like temperature and water content, must stay within certain levels for all organisms ◦ Homeostasis – the stable internal conditions of an organism Our body temperature should be around 98.6oF (37oC)
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8. Living things reproduce All organisms must have the potential to produce offspring on their own
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Asexual reproduction – a single organism produces an offspring identical to itself
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Sexual reproduction – cells from 2 organisms join to form an offspring genetically different from either parent
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