Do now: 1. Take out homework and monitors will collect. 2. How does energy flow through an ecosystem? 3. Describe this symbiotic relationship

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Do now1. Take out homework and monitors will
collect.2. How does energy flow through an
ecosystem?3. Describe this symbiotic
relationship
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What three atoms are all living things made of?
Carbon, hydrogen and oxygen
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Carbon, oxygen and hydrogen

• Did you know that the same carbon, oxygen and
  hydrogen that are currently in your body were
  once a part of a dinosaur?

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Aim

• How did atoms from dinosaurs get into our bodies?

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Photosynthesis

• Process where producers make their own food
• Carbon dioxide water sunlight -gt glucose
  oxygen
• CO2 H20 sunlight -gt C6H12O6 O2
• All chemical equations must be balanced
• How many CO2 molecules are in
• this equation to make it balanced?

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Balanced photosynthesis equation

• 6 CO2 6H20 sunlight -gt C6H12O6 6O2
• What happens to the glucose when a herbivore eats
  it?
• Herbivore breaks down glucose
• to release energy which it uses
• for life processes and growth

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Cellular respiration

• When glucose is broken apart, it forms CO2 and
  water
• This process is called cellular respiration
• C6H12O6 6O2 -gt 6 CO2 6H20 energy

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How are photosynthesis and cellular respiration
related?

• They are the opposites of each other!
• Photosynthesis
• 6 CO2 6H20 sunlight -gt C6H12O6 6O2
• Cellular respiration
• C6H12O6 6O2 -gt 6 CO2 6H20 energy

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Cellular respiration

• All cells in all living things perform cellular
  respiration
• What is the energy released in cellular
  respiration used for?
• Life processes (growth, metabolism, regulation,
  etc)

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Photosynthesis

• Plants perform photosynthesis only during the day
  but perform cellular respiration during the day
  and night.
• Why?
• Require light energy to make glucose
• Although some of the glucose is used for energy,
  some is used to make other molecules like fats
  and proteins

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Carnivore eats Herbivore where does carbon go?

• Some carbon molecules are incorporated into the
  carnivores body
• Some are broken down by cellular respiration and
  release carbon dioxide.
• Decomposers feed upon waste products and remains
  of plants and animals. They also perform
  cellular respiration and release carbon dioxide.

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What happens to all the carbon dioxide that is
produced?

• Plants can use it
• How?
• Plants will combine carbon dioxide with water
  using the energy of the sun to synthesize glucose
  during photosynthesis

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Which fish will survive longer? Why?
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Answer these questions with a partner

• How is oxygen produced by plants?
• How is oxygen used by plants and animals?
• How are the carbon and oxygen cycles intertwined?

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Summary

• How did carbon and oxygen atoms from dinosaurs
  get into our bodies?
• Carbon and oxygen is constantly being cycled
• How do carbon and oxygen atoms flow through an
  ecosystem?
• Carbon and oxygen are recycled through an
  ecosystem

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Homework

• Miller and Levine. Read pages 74-77. Do page
  80, questions 1 and 5

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Bottle ecosystem observations

• Check on your ecosystem and make observations
• Talk with your lab partners to make sure that you
  all have the materials and the methods that you
  used to set up the ecosystem in preparation for
  writing this section.