Characteristics Of Life

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Characteristics Of Life

  1. 1. Agenda <ul><li>Collect / Review Homework </li></ul><ul><li>Characteristics of Life </li></ul><ul><li>Practice: Living? Non-living? Or Dead? </li></ul><ul><li>Homework: Writing about characteristics of life </li></ul><ul><li>Return Quizzes </li></ul>
  2. 2. Homework <ul><li>Alive or not ALIVE? </li></ul>
  3. 3. Do Now <ul><li>Is fire alive ? Why or why not? </li></ul><ul><li>Write one sentence to explain </li></ul>
  4. 4. Characteristics of Life An organism which is ALIVE: <ul><li>Made up of one or more cells </li></ul><ul><li>Displays organization </li></ul><ul><li>Grows and develops </li></ul><ul><li>Reproduces </li></ul><ul><li>Responds to stimulus </li></ul><ul><li>Requires energy </li></ul><ul><li>Maintains homeostasis </li></ul><ul><li>Adaptations evolve over time </li></ul>
  5. 5. 1. An organism which is ALIVE is Made up of one or more cells More than one cell (seen under the microscope) Onion
  6. 6. Paramecium is only one cell <ul><li>An organism which is ALIVE is </li></ul><ul><li>Made up of one or more cells </li></ul>
  7. 7. 2. An organism which is ALIVE Displays organization <ul><li>Orderly arrangement </li></ul><ul><li>Example: Cells are organized into tissue which is organized into organs </li></ul>
  8. 8. 3. An organism which is ALIVE Grows and develops <ul><li>Growth results in addition of mass to an organism </li></ul><ul><li>Example: </li></ul>
  9. 9. 3. An organism which is ALIVE Grows and develops <ul><li>http://www.teachersdomain.org/resource/tdc02.sci.life.colt.plantsgrow/ </li></ul>
  10. 10. 4. An organism which is ALIVE Reproduces <ul><li>Producing Offspring </li></ul>
  11. 11. 5. An organism which is ALIVE Responds to stimulus <ul><li>STIMULUS – something from the external environment that affects an individual </li></ul>RESPONSE – reaction to the stimulus
  12. 12. An organism which is ALIVE Responds to stimulus <ul><li>http://plantsinmotion.bio.indiana.edu/plantmotion/movements/nastic/flytrap/flytrap.html </li></ul>
  13. 13. 6. An organism which is ALIVE Requires energy plant Animal Energy Energy Energy Animals get their energy from consuming other organisms Plants get their energy from the sun
  14. 14. 7. An organism which is ALIVE Maintains homeostasis <ul><li>Homeostasis – regulation of the organisms internal conditions </li></ul>When it is hot, we SWEAT to cool down When it is cold, we shiver to keep warm
  15. 15. 8. An organism which is ALIVE has adaptations <ul><li>Adaptation – an inherited characteristic </li></ul>
  16. 16. Sept 30, 2009 DO NOW: Which characteristic of life does this show? 1. An organism which is alive GROWS 2. An organism which is alive responds to STIMULUS STIMULUS RESPONSE
  17. 17. Work in pairs (2 people) <ul><li>Which characteristics of life are seen in the video examples? </li></ul><ul><ul><li>http://www.exploratorium.edu/imaging_station/students/c_elegans.html </li></ul></ul><ul><ul><li>http://www.exploratorium.edu/imaging_station/students/zebrafish.html </li></ul></ul><ul><ul><li>http://www.exploratorium.edu/imaging_station/students/sea_urchins_div.html </li></ul></ul><ul><ul><li>http://www.exploratorium.edu/imaging_station/students/sea_urchins_fert.html </li></ul></ul><ul><ul><li>http://www.exploratorium.edu/imaging_station/students/blood_cells.html </li></ul></ul><ul><ul><li>http://www.exploratorium.edu/imaging_station/students/cell_motility.html </li></ul></ul>
  18. 18. Homework <ul><li>How do you think life began (start) on earth? </li></ul><ul><li>What was the first organism? </li></ul><ul><li>Write 3-5 sentences for tomorrow. </li></ul><ul><li>(I think life on earth began …..) </li></ul>
  19. 19. Return Quiz <ul><li>Ask me any questions if there is time or during beginning of lunch. </li></ul>
  20. 20. Reference <ul><li>http://www.exploratorium.edu/imaging_station/activities/classroom/characteristics/ca_characteristics.php </li></ul>

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