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AP Biology
Chapter 10:Photosynthesis
Autotroph - Plants
Autotroph - Algae
Autotroph - Phytoplankton
Autotroph - Bacteria
Heterotroph - Animal
Heterotroph - Fungus
Fig: 10.3
Chloroplast
Photosynthesis A
Photosynthesis B
Photosynthesis chemical reaction(Remember… conservation of matter.)
6 CO2 + 6 H2O C6H12O6 + 6 O2 + Heat
Fig: 10.6
LE 10-8a
Whitelight
Refractingprism
Chlorophyllsolution
Photoelectrictube
Galvanometer
The high transmittance (low absorption) reading indicates that chlorophyll absorbs very little green light.
Greenlight
Slit moves to pass light of selected wavelength
0 100
LE 10-8b
Whitelight
Refractingprism
Chlorophyllsolution
Photoelectrictube
The low transmittance (high absorption) reading indicates that chlorophyll absorbs most blue light.
Bluelight
Slit moves to pass light of selected wavelength
0 100
Absorption vs. Reflection
Fig: 10.9a and b
Fig: 10.10(How many electrons are in Mg’s outer shell?)
Hint: Look at the Periodic Table.
Answer: 2Those 2 electrons will leave Mg and enter into the
Electron Transport Chain.
Photosystem and collecting sunlight energy.
Photosystems 1 and 2
Fig: 10.17Where it is occurring.
Non-cyclic electron flow
Cyclic electron flow
Pumping the H+ (protons) into a CONFINED space to BUILD UP POTENTIAL energy.
See the H+
Turning Potential energy into Kinetic energy to make ATP
Fig: 10.18 step 1
Fig: 10.18 Step 2
Fig: 10.18 step 3
LE 10-19
Photosyntheticcells of C4 plantleaf
Mesophyll cell
Bundle-sheathcell
Vein(vascular tissue)
C4 leaf anatomy
StomaBundle-sheathcell
Pyruvate (3 C)
CO2
Sugar
Vasculartissue
CALVINCYCLE
PEP (3 C)
ATP
ADP
Malate (4 C)
Oxaloacetate (4 C)
The C4 pathway
CO2PEP carboxylase
Mesophyllcell
LE 10-20
Bundle-sheathcell
Mesophyllcell Organic acid
C4
CO2
CO2
CALVINCYCLE
Sugarcane Pineapple
Organic acidsrelease CO2 toCalvin cycle
CO2 incorporatedinto four-carbonorganic acids(carbon fixation)
Organic acid
CAM
CO2
CO2
CALVINCYCLE
Sugar
Spatial separation of steps Temporal separation of steps
Sugar
Day
Night
