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?