Chapter 10: Photosynthesis

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Presentation transcript:

Chapter 10: Photosynthesis 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

Slit moves to pass light of selected wavelength Green light LE 10-8a 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

Slit moves to pass light of selected wavelength LE 10-8b 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

Absorption vs. Reflection

Fig: 10.9a and b

Fig: 10. 10 (How many electrons are in Mg’s outer shell Fig: 10.10 (How many electrons are in Mg’s 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: 10.17 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: 10.18 step 1

Fig: 10.18 Step 2

Fig: 10.18 step 3

LE 10-19 Mesophyll cell Mesophyll cell CO2 Photosynthetic cells of C4 plant leaf PEP carboxylase Bundle- sheath cell The C4 pathway Oxaloacetate (4 C) PEP (3 C) Vein (vascular tissue) ADP Malate (4 C) ATP C4 leaf anatomy Pyruvate (3 C) Bundle- sheath cell Stoma CO2 CALVIN CYCLE Sugar Vascular tissue

LE 10-20 Sugarcane Pineapple C4 CAM CO2 CO2 Mesophyll cell CO2 incorporated into four-carbon organic acids (carbon fixation) Night Organic acid Organic acid Bundle- sheath cell CO2 CO2 Day Organic acids release CO2 to Calvin cycle CALVIN CYCLE CALVIN CYCLE Sugar Sugar Spatial separation of steps Temporal separation of steps

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