Photosynthesis chemical reaction (Remember… conservation of matter.) 6 CO2 + 6 H2O C6H12O6 + 6 O2 + Heat
LE 10-8a White light Refracting prism Chlorophyll solution Photoelectric tube Galvanometer The high transmittance (low absorption) reading indicates that chlorophyll absorbs very little green light. Green light Slit moves to pass light of selected wavelength 0 100
LE 10-8b White light Refracting prism Chlorophyll solution Photoelectric tube The low transmittance (high absorption) reading indicates that chlorophyll absorbs most blue light. Blue light Slit moves to pass light of selected wavelength 0 100
Absorption vs. Reflection
Fig: 10.9a and b
Fig: (How many electrons are in Mgs outer shell?) Hint: Look at the Periodic Table.
Answer: 2 Those 2 electrons will leave Mg and enter into the Electron Transport Chain.
Photosystem and collecting sunlight energy.
Photosystems 1 and 2
Fig: Where 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: step 1
Fig: Step 2
Fig: step 3
LE Photosynthetic cells of C 4 plant leaf Mesophyll cell Bundle- sheath cell Vein (vascular tissue) C 4 leaf anatomy Stoma Bundle- sheath cell Pyruvate (3 C) CO 2 Sugar Vascular tissue CALVIN CYCLE PEP (3 C) ATP ADP Malate (4 C) Oxaloacetate (4 C) The C 4 pathway CO 2 PEP carboxylase Mesophyll cell
LE Bundle- sheath cell Mesophyll cell Organic acid C4C4 CO 2 CALVIN CYCLE SugarcanePineapple Organic acids release CO 2 to Calvin cycle CO 2 incorporated into four-carbon organic acids (carbon fixation) Organic acid CAM CO 2 CALVIN CYCLE Sugar Spatial separation of stepsTemporal separation of steps Sugar Day Night