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How Cells Get Energy

How Cells Get Energy. Photosynthesis: Notes 1. Autotrophs vs. Heterotrophs. Autotrophs (plants) make their own food! Heterotrophs (animals) eat other things!. PLANTS. Have chlorophyll inside chloroplasts (these give them their green color) Photosynthesis occurs in the chloroplasts.

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How Cells Get Energy

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  1. How Cells Get Energy Photosynthesis: Notes 1

  2. Autotrophs vs. Heterotrophs • Autotrophs (plants) make their own food! • Heterotrophs (animals) eat other things!

  3. PLANTS • Have chlorophyll inside chloroplasts (these give them their green color) • Photosynthesis occurs in the chloroplasts.

  4. Photosynthesis is a process in which green plants convert energy from sunlight into chemical energy!!

  5. First: Light Reactions! • Sunlight hits the chlorophyll in a leaf. • This energy knocks electrons from the chlorophyll. • These bounce from one molecule to another in a series called the electron transport chain freeing energy with each step in the form of ATP! • Water molecules are split to replace the electrons lost from the chlorophyll. • Oxygen from the water molecule is released.

  6. Light Reactions:

  7. Second: Dark Reactions: • AKA: The Calvin Cycle! • (For real.)

  8. Calvin Cycle (dark rxns) • 1) The energy from the light reactions is used to transform CO2 to form PGA. • 2) The hydrogen from the light reactions reacts with the PGA to from PGAL. • 3) Two PGAL molecules combine to form glucose!!!!

  9. Summary:

  10. Formula: • 6CO2 + 6 H2O  C6H12O6 + 6O2 • CO2 from air! • H2O from ground! • Glucose out for energy! • O2 out (what we breathe!) • Water used for Hydrolysis later.

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