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UNIT 1 CHARACTERISTICS OF LIFE

Learn about the fundamental characteristics of living things, including the structure and function of cells, different methods of reproduction, growth and development, energy acquisition and utilization, and response to the environment.

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UNIT 1 CHARACTERISTICS OF LIFE

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  1. UNIT 1 CHARACTERISTICS OF LIFE CH2 - P. 27-31 CH5 - P. 87-102

  2. Unit 1 - Outline • Describe the characteristics of living things p. 27-31 • Explain the role of homeostasis p. 31 • Compare and contrast a prokaryotic cell with a eukaryotic cell p. 92 • Compare plant and animal cells p. 87-98 • State the roles of the cells organelles p. 89-97 • Describe the relationship of the cell membrane and the cell wall to osmosis p. 97, 100-102 • Compare sexual and asexual reproduction and the benefits of each p. 28 • Demonstrate the use of the microscope, magnification, and lab drawings

  3. CHARACTERISTICS OF LIFE ALL LIVING THINGS: • are made up of one or more units called cells • Reproduce • Grow & develop • Obtain & use energy • Respond to their living environment

  4. Living things are made up of cells • Unicellular = one celled organism • Multicellular = hundreds to trillions of cells working together

  5. Living things Reproduce • Asexual Reproduction: single organism reproduces without the aid of another • Sexual Reproduction: two cells from different individuals unite to produce the first cell of the new individual

  6. Living things Grow and Develop • Most living things go through a cycle of change called development • Then comes aging where reproduction stops • lastly inevitably comes death which is also a process that separates living from non-living things

  7. Living things obtain and use energy • Anabolism: synthesis of complex substances from simpler ones • Photosynthesis in plants • Catabolism: breakdown of complex substance to simple • digestion in animals • Metabolism: sum of anabolism and catabolism

  8. Living things Respond to their Environment • The ability of living things to respond to stimulus is called irritability • Homeostasis: organisms ability to maintain constant/stable conditions suitable for life

  9. SECTION 2-1 - SECTION REVIEW P. 31 #1-4 - Due next class! 1. Define the five characteristics of living things and give an example of evidence for each 2. Compare and contrast sexual and asexual reproduction. What are the positives and negatives of both?

  10. SECTION 2-1 - SECTION REVIEW 3. Define Metabolism in terms of catabolism and anabolism 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?

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