Photosynthesis Background Information

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PhotosynthesisBackground Information

• Energy Life

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Autotrophs Heterotrophs

• Key Concept
• Plants and some other types of organisms are able
  to use light energy from the sun to produce food.

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Autotrophs Heterotrophs

• Autotrophs
• Organisms that make their own food.
• They can use the suns energy directly.

Euglena
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Autotrophs Heterotrophs

• Heterotrophs
• Organisms that can NOT make their own food.
• They can NOT use the suns energy directly.

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Chemical Energy ATP

• Energy Takes Many Forms
• Light
• Heat
• Electricity
• Chemical compounds
• Candles release chemical energy as light heat

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ATP ADP

• ATP
• Adenosine Triphosphate

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ATP ADP

• ADP

Adenosine Adenine Ribose
Diphosphate Two Phosphate Groups
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ATP ADP
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Releasing Energy From ATP

• Adding A Phosphate Group To ADP Adds Energy
• Subtracting A Phosphate Group From ATP Releases
  Energy

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Releasing Energy From ATP

• Key Concept
• The Characteristics of ATP Make It An
  Exceptionally Useful Molecule, And It Is Used By
  All Cells of All Life Forms As Their Basic
  Energy Source.

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Using Biochemical Energy

• Cells Use ATP For
• Active Transport
• Movement
• Biochemical Reactions

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Molecules of Energy Storage

• ATP
• Cells Have Enough ATP To Last For A Few Seconds.
• ATP Transfers Energy Very Well
• ATP Is NOT Good At Energy Storage.

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Molecules of Energy Storage

• One Glucose Molecule
• Stores More Than 90 Times The Chemical Energy
  Than
• One ATP Molecule

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Molecules of Energy Storage

• Fats store the most energy.

• 80 percent of the energy in your body
• about 146 ATP from a triglyceride

• Proteins are least likely to be broken down to
  make ATP.

• amino acids not usually needed for energy
• about the same amount of energy as a carbohydrate

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A few types of organisms do not need sunlight and
photosynthesis as a source of energy.
Chemoautotroph's

• Some organisms live in places that never get
  sunlight.
• In chemosynthesis, chemical energy is used to
  build carbon-based molecules.
• similar to photosynthesis
• uses chemical energy instead of light energy