warm up oct. 30
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Warm up Oct. 30. How do animals get energy? What about plants? How do animals store energy? What about plants? How do you starve an animal? What about a plant? Explain your answer. Chemical Energy & Trophs . What to do?. Write words in white Yellow words mean you need to do something!. - PowerPoint PPT PresentationTRANSCRIPT
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Warm up Oct. 30 How do animals get energy? What
about plants? How do animals store energy? What
about plants?
How do you starve an animal? What about a plant? Explain your answer.
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CHEMICAL ENERGY &
TROPHS
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What to do? Write words in white Yellow words mean you need to do
something!
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Cellular Energy Cells must convert food into a form of
energy they can use. They cannot cash in carbohydrates for
energy.Analogy: You cannot use money stored in
the bank. You first need to turn it into cash.
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Cellular Energy, continued Cells convert
carbohydrates into ATP○ ATP(adenosine
triphosphate): molecule used to carry chemical energy
○ Carries energy in its bonds
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ATP vs. ADP
Make a double bubble in your notes comparing the structures of ATP and ADP2 similarities and 1
difference Which carries more
energy? Why?
triphosphateadenosine
adenosine diphosphate
ATP
ADP
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How does ATP Release Energy?
Energy is released when a phosphate group is removed.
ADP (2p) is changed into ATP (3p) when a phosphate group is added.
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How does ADP become ATP? Carbohydrates and other foods
consumed by the body contain energy.
When they are broken down, energy is released and is used to reattach the phosphate molecule to the ADP, turning it back into ATP.
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How is ATP like a rechargeable battery?
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How do Organisms get their Food?
1. Autotrophs: make their own food using inorganic compounda) Phototrophs: use the sunlightb) Chemotrophs: use chemicals
2. Heterotrophs: eat other organisms for food
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Photosynthesis
Plants also need ATPThey do not directly use organic
molecules (ex. Carbohydrates) They use energy produced from
photosynthesis (make sugars from sunlight)
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All cells break down macromolecules for energy
Both Heterotrophs and Autotrophs contain energy in the form of organic molecules. To get energy all organisms must convert food
into a form of energy they can use. Even plants need to eat. The only difference is
that they make their own food.