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Chloroplasts

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Chloroplasts

Vocabulary

chloroplast

chloroplast

Organelle in the cells of plants and algae; site of photosynthesis.
electron carrier

electron carrier

Molecules that accept and temporarily hold high-energy electrons.
electron transport chain

electron transport chain

Series of electron-transport molecules that pass high-energy electrons from molecule to molecule and capture their energy.
grana

grana

(singular: granum): Stacks of thylakoid membranes within the chloroplast.
photosystem

photosystem

Group of molecules, including chlorophyll, in the thylakoid membrane of a chloroplast that captures light energy.
stroma

stroma

Space outside the thylakoid membranes of a chloroplast; site of the Calvin cycle of photosynthesis.
thylakoid

thylakoid

Sub-organelle within the chloroplast; site of photosynthesis.
chlorophyll

chlorophyll

Green pigment in a chloroplast that absorbs sunlight, starting the light reactions of photosynthesis.
photosynthesis

photosynthesis

Process of using the energy in sunlight to make food (glucose).

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