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All things considered to be alive have what characteristics in common?. Make a list of reasons why you think the following organisms are considered “alive”. Team that comes closest wins!! . 8 characteristics of living things. Have cells and DNA Reproduce Grow and Develop Use energy

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all things considered to be alive have what characteristics in common
All things considered to be alive have what characteristics in common?
  • Make a list of reasons why you think the following organisms are considered “alive”.
  • Team that comes closest wins!!
8 characteristics of living things
8 characteristics of living things
  • Have cells and DNA
  • Reproduce
  • Grow and Develop
  • Use energy
  • Have a need for materials and energy
  • Respond to environment
  • Maintain internal balance
  • Evolve over time as a species
1 have cells and dna
1. Have cells and DNA
  • Unicellular
  • Multi-cellular
1 have cells and dna1
1. HAVE CELLS AND DNA
  • Multi-cellular: cells differentiate from a single fertilized egg cell, and they just “know” to become a heart, leg etc.
  • Uni-cellular : one celled organism (amoeba or bacteria)
  • Both above have DNA ( the genetic code: which is why we look like our parents)
2 all living things reproduce
2. All living things reproduce
  • There are 2 ways in which this can be done…
2 all living things reproduce1
2. All living things Reproduce
  • There are 2 types of reproduction:
  • Asexual : 1 parent (budding) - identical
    • bacteria
  • Sexual: 2 parents
    • cats
    • people
3 living things grow and develop
3. Living things grow and develop
  • What is the difference between the 2 words?
growth and development
Growth and Development
  • Bacteria- grow, they just increase in size
  • People – develop … they increase in size and their bodily functions change over time….until they become an adult
  • ex) puberty…
living things use energy to grow develop reproduce or just stay alive
Living things use energy to grow/develop/reproduce… or just stay alive
  • Where do we get energy from?
  • Metabolism: combination of chemical reactions through which an organism builds up and breaks down materials (will release energy) as it carries out life processes
    • Fast metabolism- break down
    • Slow metabolism – store for later
how obtain energy
How obtain energy?
  • Plants: From the sun’s energy “photosynthesis”
  • Lion: From eating other organisms “herbivore, carnivore”
  • Mushroom: From the remains of dead organisms (decomposers)
6 living things respond to stimuli
6. Living things respond to stimuli
  • http://www.fotosearch.com/video-footage/time-lapse-flower_2.html
6 respond to stimulus
6. Respond to stimulus
  • Stimulus- signal to which an organism responds
    • Response-(what they do because of the signal)
  • Internal stimulus- ex.) sugar levels drop? …then you feel hungry
  • External: ex.) flower leans toward the window in a classroom
practice stimulus and response
Practice Stimulus and Response
  • My niece kicked me in the shin and I screamed
  • I slammed the door and the class jumped
  • I turned the light on and the mouse ran under the table
  • I placed my hand on the hot stove and I yanked it back and yelped
7 maintain internal balance
7. Maintain internal balance
  • External: conditions may vary widely
  • But internal…. Should be kept constant.. This is homeostasis
  • Ex) temperature 98.6 F, water content, etc
  • Ex of how it happens?
    • Shivering/sweating
    • Thirst/feeling of fullness
8 evolve over time evolution
8. Evolve over time :Evolution
  • 100,000’s of millions of years…changes can be dramatic within a species…
  • ex) pre-historic horse was the size of a Barbie doll horse