Fig. 7-00

Fig. 7-01

Plants(mostly on land)

Photosynthetic Protists(aquatic)

PHOTOSYNTHETIC AUTOTROPHS

Photosynthetic Bacteria(aquatic)

Micrograph of cyanobacteriaKelp, a large algaForest plants

LM

Fig. 7-01a

Plants(mostly on land)

Forest plants

Fig. 7-01b

Photosynthetic Protists(aquatic)

Kelp, a large alga

Fig. 7-01c

Photosynthetic Bacteria(aquatic)

Micrograph of cyanobacteria

LM

Fig. 7-02-1

Leaf cross section

Stomata

Vein

CO2 O2

Fig. 7-02-2

Leaf cross section

Stomata

Vein

CO2 O2

Interior cellL

M

StromaGranum Thylakoid

ChloroplastOutermembrane

Innermembrane

TE

M

Fig. 7-02a

Leaf cross section

Stomata

Vein

CO2 O2

Fig. 7-02b

StromaGranum Thylakoid

Chloroplast Outermembrane

Innermembrane

TE

M

Fig. 7-03-1

Light

H2O

O2

Chloroplast

Lightreactions

NADPH

ATP

Fig. 7-03-2

Light

H2O

O2

Chloroplast

Lightreactions

NADPH

ATP

Calvincycle

CO2

NADP+

ADPP

Sugar

(C6H12O6)

Fig. 7-04

Visible light

Wavelength (nm)

Radiowaves

380 400 500 600 750700

Wavelength = 580 nm

Micro-waves

Gamma

raysInfraredUVX-rays

10–5 nm 10–3 nm 103 nm1 nm 106 nm 1 m 103 m

Increasing wavelength

Fig. 7-05

Bacterium

Wavelength of light (nm)400 500 600 700

Light

Nu

mb

er o

f b

acte

ria

Algal cells

Prism

Microscope slide

Fig. 7-06

Light

Chloroplast

Reflectedlight

Absorbedlight Transmitted

light

Fig. 7-06a

Light

Chloroplast

Reflectedlight

Absorbedlight

Transmittedlight

Fig. 7-06b

Fig. 7-07

Fig. 7-08

Light

(b) Fluorescenceof a glow stick

Photon

Heat

Light (fluorescence)

Ground stateChlorophyllmolecule

Excited statee–

(a) Absorptionof a photon

Fig. 7-08a

Light

Photon

Heat

Light (fluorescence)

Ground stateChlorophyllmolecule

Excited state

e–

(a) Absorption of a photon

Fig. 7-08b

(b) Fluorescence of a glow stick

Fig. 7-09-1

Chloroplast

Fig. 7-09-2

Chloroplast

Thylakoidmembrane

Pigment molecules

Fig. 7-09-3

Chloroplast

Thylakoidmembrane

Pigment molecules

Antenna pigmentmolecules

Primaryelectronacceptor

Reaction-centerchlorophyll a

Photon

Electrontransfer

Reactioncenter

PhotosystemTransfer of energy

Fig. 7-10-1

Primaryelectronacceptor

Water-splittingphotosystem

Light

H2O

2 H

Reaction-centerchlorophyll

2e–

2e–

O2++ 1

2

Fig. 7-10-2

Primaryelectronacceptor

Water-splittingphotosystem

Light

H2O

2 H

Reaction-centerchlorophyll

2e–

2e–

O2++

Electron transport chain

Energyto make

ATP

1

2

Fig. 7-10-3

Primaryelectronacceptor

Water-splittingphotosystem

Light

H2O

2 H

Reaction-centerchlorophyll

2e–

2e–

O2++

Electron transport chain

Energyto make

ATP

Primaryelectronacceptor

2e–

Light

NADPH-producingphotosystem

Reaction-centerchlorophyll

2e–

NADPH

NADP

1

2

Fig. 7-11

Light

H2O

Thylakoidmembrane

2e–

O2

ATP

NADP

Light

Stroma

Inside thylakoid

Photosystem PhotosystemElectron transport chain

NADPH

ADP P

H+

ATPsynthase

To Calvin cycle

H

Electron flow

H+H

H

H

H

1

2

Fig. 7-11a

Light

H2O

Thylakoidmembrane

2e–

O2

ATP

NADP

Light

Stroma

Inside thylakoid

Photosystem PhotosystemElectron transport chain

NADPH

ADP P

ATPsynthase

To Calvin cycle

Electron flow

H

1

2

HH

H

H H

H

Fig. 7-12

Water-splittingphotosystem

e–

Ph

oto

n

ATP

NADPH

e–

e–

e–

e–

e–

Ph

oto

n

e–

NADPH-producingphotosystem

Fig. 7-13-1

Calvincycle

P P

P

Three-carbon moleculeRuBP sugar

CO2 (from air)

Fig. 7-13-2

ATP

NADPH

Calvincycle

ADP P

NADP

P

P P

P

G3P sugar

Three-carbon moleculeRuBP sugar

CO2 (from air)

Fig. 7-13-3

ATP

NADPH

ADP P

NADP

P

P

P

P P

P

G3P sugar

Three-carbon molecule

G3P sugar

G3P sugar

RuBP sugar

CO2 (from air)

Calvincycle

Glucose (and other organic compounds)

Fig. 7-13-4

ATP

NADPH

Calvincycle

ADP P

NADP

P

P

P

P P

P

ADP P

ATP

G3P sugar

Three-carbon molecule

G3P sugar

G3P sugar

RuBP sugar

CO2 (from air)

Glucose (and other organic compounds)

Fig. 7-14

Sugar

C4 Pathway(example: sugarcane)

C4 plant CAM plantSugar

Calvincycle

Calvincycle

Day

Celltype 1

Four-carboncompound

Night

Four-carboncompound

Celltype 2

CAM Pathway(example: pineapple)

ALTERNATIVE PHOTOSYNTHETIC PATHWAYS

CO2 CO2

CO2 CO2

Fig. 7-14a

Sugar

C4 Pathway(example: sugarcane)

C4 plant

Calvincycle

Celltype 1

Four-carboncompound

Celltype 2

CO2

CO2

Fig. 7-14b

CAM plant

Sugar

Calvincycle

Day

Four-carboncompound

Night

CAM Pathway(example: pineapple)

CO2

CO2

Fig. 7-UN01

Carbon dioxide

6 O26 CO2 6 H2O C6H12O6

Water GlucosePhoto-synthesis Oxygen gas

Light energy

Fig. 7-UN02

Light

reactions

CO2

O2

H2O

(C6H12O6)

NADPH

Light

Sugar

ATP

ADPP

NADP

Calvin

cycle

Fig. 7-UN03

Light

reactions

CO2

O2

H2O

(C6H12O6)

NADPH

Light

Sugar

ATP

ADP

P

NADP

Calvin

cycle

Fig. 7-UN04

Carbon dioxide

6 O26 CO2 6 H2O C6H12O6

Water GlucosePhotosynthesis

Oxygen gas

Light energy

Fig. 7-UN05

Light H2O

O2

Chloroplast

Lightreactions

NADPH

ATP

Calvincycle

CO2

NADP+

ADPP

Sugar

(C6H12O6)

Stack ofthylakoids Stroma

Fig. 7-UN06

acceptor

Water-splittingphotosystem

Photon

H2O

2 H

Chlorophyll

2e–

O2++

Electron transport chain

ATP

NADPH-producingphotosystem

Chlorophyll

NADPH

NADP+

e–

2e–

2e–

2e–

e–

acceptorADP

Photon

21

Fig. 7-UN07

NADPH

Calvincycle

ADP P

NADP

P

ATP

G3P

CO2

Glucose andother compounds