Chapter 7 photosynthesis

bio

autotroph

Organism that produces its own food

heterotroph

Organism that consumes others for energy

chloroplast

Organelle where photosynthesis takes place

chlorophyll

Pigment that absorbs sunlight

Thylakoid membrane

Site of the light reactions

Stroma

Fluid-filled interior of the chloroplast

Grana

Stack of thylakoids

Leaf stomata

Pores that allow gas exchange in leaves

NADP⁺

Electron carrier molecule

Photon

Packet of light energy

Where do the light reactions take place?

Thylakoid membrane

Which of the following are required for the light reactions?

Light, water, and chlorophyll

What are the products of the light reactions?

Oxygen, ATP, and NADPH

What happens to water molecules in the light reactions?

They are broken down to release oxygen, protons, and electrons

How does oxygen exit the plant?

Through the leaf stomata

Where does the Calvin cycle occur?

Stroma

What are the main products of the Calvin cycle?

Glucose and NADP⁺

What two molecules from the light reactions are needed in the Calvin cycle?

ATP and NADPH

How does carbon dioxide enter the leaf?

Through the stomata

What is the purpose of the Calvin cycle?

To convert carbon dioxide into glucose