BIG PICTURE

Stomata

Mesophyll tissue

Mesophyll cell

chloroplast

Grana (stack of thylakoids)

Stroma (solution)

Why are leaves GREEN?

• Sunlight = White light and contains all colors of the spectrum

• Leaves contain pigments chlorophyll a & b and carotenoids

• Chlorophylls absorb all colors besides green = reflect green

Why do leaves change in the fall?

• Leaves loose their chlorophyll as they die

• Carotenoids (pigment) reflect yellows, oranges, greens

Pigments

LIGHT REACTION: Electron Transport (draw on yellow paper)

HydrogenIon Movement

Photosystem II

InnerThylakoidSpace

ThylakoidMembrane

Stroma

ATP synthase

Electron Transport Chain Photosystem I ATP Formation

Chloroplast

Section 8-3

Figure 8-10 Light-Dependent Reactions

Calvin Cycle: (draw on colored paper)

ChloropIast

CO2 Enters the Cycle

Energy Input

5-CarbonMoleculesRegenerated

Sugars and other compounds

6-Carbon SugarProduced

Section 8-3

Figure 8-11 Calvin Cycle

5 and 5open-note quiz

5 min on own

5 min with neighbor