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Oxidized in light reactions

Water (H2O)

Reduced in Calvin Cycle

Carbon Dioxide (CO2)

Carries hydrogen and electrons from light reactions to Calvin cycle.

NADPH

Food produced by photosynthesis

Glucose

Source of hydrogen and electrons from glucose.

Water (H2O)

Source of oxygen atoms in glucose

Carbon Dioxide (CO2)

Where oxygen atoms from water (photolysis) end up.

Oxygen (O2)

Oxidized in Calvin Cycle

NADPH

Reduced in light reactions

NADP+

Supplies energy to Calvin Cycle

ATP

Where carbon and oxygen atoms in carbon dioxide end up

Glucose

Recycled from Calvin Cycle to make ATP

ADP + P

Supplies energy to light reactions

light

Gas produced by the reactions in the thylakoids

Oxygen (O2)

Gas consumed by the reactions in the stroma

Carbon Dioxide (CO2)

Source of carbon for carbon fixation

Carbon Dioxide (CO2)

Source of hydrogen for thew Calvin Cycle

NADPH

Picks up energized electrons from reactions in the thylakoids

NADP+

May waste energy on photorespiration on a hot day

C3 pathway

Trap carbon in a four carbon compound, which donates it to the Calvin Cycle

C4 Pathway

Corn and sugarcane

C4 Pathway

Open stomata and trap CO2 at night

CAM Pathway

Most plants

C3 Pathway

Soybeans, oat, wheat, rice

C3

Can grow in hot, dry climates

CAM and C4 Pathways

Pineapple and many cacti

CAM Pathway

Calvin Cycle uses CO2 directly from the air

C3 Pathway

Oxidized in the process of photosynthesis

water

Cell organelle where photosynthesis takes place

chloroplast

Light catching membranes in the chloroplast

Thylakoids

Stack of thylakoids in the chloroplast

Grana

Energy that travels through space as rhythmic waves.

electromagnetic waves

when chlorophyll is absorbed an --------- is excited

electron

Sugar is made in this cycle

Calvin Cycle

Where the Calvin Cycle occurs

Stroma

Green pigment in leaves

chlorophyll

Pores in leaves

Stomata

Antenna-like harvesting unit in a thylakoid

photosystem

fixed quantity of light energy

photon

The color of light is related to its -------

wavelength

Source of energy for photosynthesis

light

incorporation of carbon dioxide into organic compounds

Carbon fixation

Chlorophyll molecule that absorbs excited electrons

reaction center

yellow-orange pigments in the chloroplast

carotenoids

Green tissue in the interior of a leaf

mesophyll

Organism that uses light to make food

autotroph

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