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A-level Photosythesis

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    Photosythesis
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  • What is the overall equation for photosynthesis?,
    6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
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  • In which organelle does photosynthesis occur?,
    Chloroplast
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  • Which pigment is primarily responsible for absorbing light energy?,
    Chlorophyll a
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  • Where does the Calvin cycle take place?
    Stroma
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  • What is the source of electrons in the light-dependent reactions?
    Photolysis of water
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  • What are the products of the light-dependent reactions?
    ATP, reduced NADP (NADPH), and oxygen
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  • What is photolysis?
    Splitting of water using light energy
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  • Which molecule accepts electrons at the end of the electron transport chain?
    NADP
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  • What is the role of ATP in photosynthesis?
    Provides energy for the Calvin cycle
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  • What is the role of reduced NADP (NADPH)?
    Provides hydrogen/reducing power in the Calvin cycle
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  • What enzyme catalyses carbon fixation in the Calvin cycle?
    RuBisCO
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  • What molecule is formed when CO₂ combines with RuBP?
    GP (glycerate-3-phosphate)
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  • What is the role of RuBP in photosynthesis?
    CO₂ acceptor in the Calvin cycle
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  • What happens to GP in the Calvin cycle?
    It is reduced to TP using ATP and NADPH
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  • What happens to TP to form glucose?
    Two TP molecules combine to form one hexose sugar
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  • What is the fate of most TP molecules?
    Regenerate RuBP
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