The Light Dependent Reaction Thylakoids
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Plant cells contain chloroplasts which is the site of photosynthesis Chloroplasts are filled with a fluid known as the
stroma
The system of membranes found in the stroma of the chloroplast consists of a series of
thylakoids membranes
In places, these thylakoids stack up to form structures known as
grana
The light-dependent stage of photosynthesis occurs in the
thylakoid membranes and the thylakoid spaces (the spaces inside the thylakoids)
The thylakoid membranes contain the ………….. required for light dependent reaction
pigments, enzymes and electron carriers
The thylakoid membranes contain the pigments, enzymes and electron carriers required for the light-dependent reactions These proteins and pigments make up an electron transport chain used to
carry electrons through the membrane
Electron energy can be used to move ……….. across a membrane
H+ ions
Electrons are donated by ………………… and accepted by ………………molecules that form …………..
water molecules NADP NADPH
The membranes of the grana create a
large surface area to increase the number of light-dependent reactions that can occur
The membranes of the grana create a large surface area to increase the number of light-dependent reactions that can occur This membrane system provides a large number of pigment molecules in an arrangement that ensures
as much light as necessary is absorbed
The pigment molecules are arranged in light-harvesting clusters known as
photosystems