AP Biology Chapter 10: Photosynthesis. Autotroph - Plants

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