it is a molecule that acts as a hydrogen acceptor, becoming reduced to NADPH
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what does NADPH provide
it provides reducing power within reactions as it loses this hydrogen, becoming oxidised to NADP
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what is the photosynthesis equation
6CO2 + 6H2O --> C6H12O6 + 6O2
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what does the light dependent reaction use
light and H2O
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what does the light dependent reaction produce
O2, NADPH and ATP
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what does the light independent reaction use
NADPH, ATP, CO2
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what does the light independent reaction produce
C6H12O6 (glucose)
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where does the light dependent reaction occur
the grana
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where does the light independent reaction occur
stroma
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what is the equation for photolysis and what are its products used for
2H2O --> (4H+) + (4E-) + O2, the electrons replace those lost by chlorophyll, the+ Is used to reduce NADP, oxygen is given off as a waste product
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where does photolysis of water occur
in the thylakoid space
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what happens if a weed killer stops an electron being released
no ATP or NADPH can be formed
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what happens when an electron transport chain is not available for the excited electron.
the organism will fluoresce because the excited electron cannot lose energy via the electron transport chain so releases the energy as light
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what enzyme catalyses the Calvin cycle
rubisco
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what does Ribulose Biposphate act as
a carbon dioxide acceptor
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what is Triose phosphate get converted into
useful carbohydrates, amino acids and triglycerides. some TP Is used to regenerate RuBP using ATP
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what is a limiting factor
The law of limiting factors states that when a chemical process depends on more than one essential condition being favourable, the rate of reaction will be limited by the factor that is nearest its minimum value.
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what are the abiotic factors of photosynthesis
Light intensity, Temperature and Carbon Dioxide concentration
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how do you explain the rate of photosynthesis graphs
if the rate of photosynthesis is directly proportional to a factor, the factor is the limiting factor, if the curve starts to level off the factor is no longer the limiting factor and a different factor is.
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how does agriculture use the limiting factor light to optimise the rate of photsynethesis
artificial light can be used to increase light intensity to the optimum levels. blinds can be used to shade plants because very high intensity can damage the chlorophyll
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how does growers use the limiting factor carbon dioxide concentration to optimise photosynthesis levels
increased by burning fossil fuels or pumping co2 into greenhouses
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how do growers use the limiting factor temperature to optimise the rate of photosynthesis
heaters can be used to raise the temperature to optimum levels and is also used at night to prevent temperatures falling to levels where plants may be damaged
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describe the stroma
protein rich matrix surrounding thylakoids donating enzymes starch grains and ribosomes
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what does NADP stand for
nicotinamide adenine dinucleotide phosphate
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what is photoionisation
the process by which a chlorophyll molecule becomes positively charged as a result of losing 2 electrons when it absorbs light.
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Other cards in this set
Card 2
Front
what is NADP
Back
it is a molecule that acts as a hydrogen acceptor, becoming reduced to NADPH
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