Light - Dependent reaction

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What does the light dependent reaction need?
Light energy
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Where does it take place?
Thylakoid membranes
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What absorbs the light energy?
Photosynthetic pigments in photosystems
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What is the light energy converted to?
Chemical energy
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What two things is the light energy used for?
Add a phosphate group to ADP to form ATP & reduce NADP to reduced NADP
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What do the two products do?
Transfer energy & hydrogen to light - independent reaction
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What happens to H20?
Oxidised to O2
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What does non cyclic photophosphorylation create?
ATP, reduced NADP, o2
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What does cyclic photophosphorylation create?
Only ATP
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What is the reason for this difference?
Cylic only uses PSI, so electorns are passed back to PSI via electron carriers
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What happens to the electrons?
Electrons are recycled & can repeatedly flow through PSI not used to reduce NADP
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Card 2

Front

Where does it take place?

Back

Thylakoid membranes

Card 3

Front

What absorbs the light energy?

Back

Preview of the front of card 3

Card 4

Front

What is the light energy converted to?

Back

Preview of the front of card 4

Card 5

Front

What two things is the light energy used for?

Back

Preview of the front of card 5
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