AP Biology Photosynthesis Part 1.

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Presentation transcript:

AP Biology Photosynthesis Part 1

Autotroph - Plants

Autotroph - Algae

Autotroph - Phytoplankton

Autotroph - Bacteria

Heterotroph - Animal

Heterotroph - Fungus

Chloroplasts in plant leaf cells

Chloroplast

Photosynthesis chemical reaction (Remember… conservation of matter.) 6 CO2 + 6 H2O  C6H12O6 + 6 O2 + Heat

Photosynthesis Light Reaction

Photosynthesis Calvin Cycle

Electromagnetic Spectrum

Absorption vs. Reflection

Chloroplasts REFLECTING Green Light White light Refracting prism Chlorophyll solution Photoelectric tube Galvanometer 100 The high transmittance (low absorption) reading indicates that chlorophyll absorbs very little green light. Slit moves to pass light of selected wavelength Green light

Chlorophyll ABSORBING Blue light to power photosynthesis White light Refracting prism Chlorophyll solution Photoelectric tube 100 Slit moves to pass light of selected wavelength The low transmittance (high absorption) reading indicates that chlorophyll absorbs most blue light. Blue light

Chloroplasts absorbing the blue and the red light waves Chloroplasts absorbing the blue and the red light waves. The green is NOT being absorbed.

Chlorophyll Molecule (How many electrons are in Mg’s outer shell Chlorophyll Molecule (How many electrons are in Mg’s outer shell?) Hint: Look at the Periodic Table.

Answer: 2 These 2 electrons will be important!

Photosystem and collecting sunlight energy.

Photosystems 1 and 2

Where are the photosystems located?

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