12 Themes in Biology

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1-2 Themes in Biology
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Diversity Unity of Life

• Diversity Theres lots of different living
  things.
• Unity All these different living things have
  certain things in common
• A genetic code
• These relationships can be shown with a tree of
  life model.

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Three Domains

• 3 Categories of all living things
• Bacteria, Archae, Eukarya
• Another way to categorize living things is the
  Kingdom system
• 6 Kingdoms
• Animalia, Plantae, Fungi, Protista, Bacteria,
  Archaea

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Interdependance

• Organisms their environment interact
• Ecology studies this
• Ecosystems are communities of living things and
  their environments
• Humans really interact with the environment

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Evolution of Life

• You will change during your life
• All of humanity will change over several
  generations
• This explains the branches of the tree of life

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Natural Selection

• Some organisms have certain favorable traits that
  make them better able to survive and have more
  kids that survive.
• Over time there will be more of these kids and
  the population will start to look different.
• Differential Reproductive Success

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• 1. Name 3 Unifying themes of biology

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• How is the unity and diversity in the living
  world represented as a model?

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• I.D. the 3 domains

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• How are organisms interdependant?

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• Describe why evolution is important in explaining
  the diversity of life?

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• What is the difference between evolution and
  natural selection?

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• Fossil evidence shows that bats descended from
  shrewlike organisms that could not fly. Write a
  hypothesis for how natural selection might have
  led to flying bats.