characteristics of life

Made of cell(s)

• Could be multicellular or unicellular (single-celled)

  Humans, plants vs. bacteria

• w

• w

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Reproduce

• To create offspring

• w

• w

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Name all of the characteristics of life

• Made of cells, reproduce, maintain homeostasis, metabolism ( obtain/use energy) Respond to stimuli, Growth and development.

• G

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Grow/develop

• Growth = increase in size (baby to child to adult)

  Develop = structural/physical or mental changes (tadpole to frog, learning how to walk)

• g

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Obtain/Use Energy (Have a Metabolism)

• Eating food for energy or plants creating their own energy from sunlight

  
  

  An elephant eating leaves, plant taking in sunlight

• v

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Respond to Stimuli

• Ability to have natural reactions.

  
  

  Plant leaning towards window, jumping at loud noise

• g

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Maintain Homeostasis

• A stable internal environment.

  
  

  Body temperature, blood sugar level, heart rate, pulse

• g

According to the Characteristics of Life, how is a virus different from living things?

• Viruses are not made of cells (even smaller! it is a capsid), cannot reproduce without being in a host, does not maintain homeostasis, BUT it can adapt and mutate (respond to stimuli)

• gd

Define Osmosis:

• The movement of water from an area of high concentration to an area of low concentration until it has reached equal concentrations.

• 5

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