Unit1 lesson1-Characteristics of Life

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Unit1 lesson1-Characteristics of Life

  1. 1. UNIT 1 CHARACTERISTICS OF LIFE CH2 - P. 27-31 CH5 - P. 87-102
  2. 2. Unit 1 - Outline <ul><li>Describe the characteristics of living things p. 27-31 </li></ul><ul><li>Explain the role of homeostasis p. 31 </li></ul><ul><li>Compare and contrast a prokaryotic cell with a eukaryotic cell p. 92 </li></ul><ul><li>Compare plant and animal cells p. 87-98 </li></ul><ul><li>State the roles of the cells organelles p. 89-97 </li></ul><ul><li>Describe the relationship of the cell membrane and the cell wall to osmosis p. 97, 100-102 </li></ul><ul><li>Compare sexual and asexual reproduction and the benefits of each p. 28 </li></ul><ul><li>Demonstrate the use of the microscope, magnification, and lab drawings </li></ul>
  3. 3. CHARACTERISTICS OF LIFE <ul><li>ALL LIVING THINGS: </li></ul><ul><li>are made up of one or more units called cells </li></ul><ul><li>Reproduce </li></ul><ul><li>Grow & develop </li></ul><ul><li>Obtain & use energy </li></ul><ul><li>Respond to their living environment </li></ul>
  4. 4. Living things are made up of cells <ul><li>Unicellular = one celled organism </li></ul><ul><li>Multicellular = hundreds to trillions of cells working together </li></ul>
  5. 5. Living things Reproduce <ul><li>Asexual Reproduction: single organism reproduces without the aid of another </li></ul><ul><li>Sexual Reproduction: two cells from different individuals unite to produce the first cell of the new individual </li></ul>
  6. 6. Living things Grow and Develop <ul><li>Most living things go through a cycle of change called development </li></ul><ul><li>Then comes aging where reproduction stops </li></ul><ul><li>lastly inevitably comes death which is also a process that separates living from non-living things </li></ul>
  7. 7. Living things obtain and use energy <ul><li>Anabolism: synthesis of complex substances from simpler ones </li></ul><ul><ul><li>Photosynthesis in plants </li></ul></ul><ul><li>Catabolism: breakdown of complex substance to simple </li></ul><ul><ul><li>digestion in animals </li></ul></ul><ul><li>Metabolism: sum of anabolism and catabolism </li></ul>
  8. 8. Living things Respond to their Environment <ul><li>The ability of living things to respond to stimulus is called irritability </li></ul><ul><li>Homeostasis: organisms ability to maintain constant/stable conditions suitable for life </li></ul>
  9. 9. SECTION 2-1 - SECTION REVIEW <ul><li>P. 31 #1-4 - Due next class! </li></ul><ul><li>1. Define the five characteristics of living things and give an example of evidence for each </li></ul><ul><li>2. Compare and contrast sexual and asexual reproduction. What are the positives and negatives of both? </li></ul>
  10. 10. SECTION 2-1 - SECTION REVIEW <ul><li>3. Define Metabolism in terms of catabolism and anabolism </li></ul><ul><li>4. Think of a non-living thing that satisfies each of the 5 characteristics of life. Does any non-living thing have all the characteristics of life? </li></ul>

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