Download A2 Biology Photosynthesis Free Content

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What is photosynthesis?
All life on Earth depends on photosynthesis. The process is
described by the following word and symbol equations:
carbon
+ water
dioxide
light energy
oxygen + glucose
light energy
6CO2 + 6H2O
6O2 + C6H12O6
These equations are summaries of a complex two-step process
that takes place in the chloroplasts of green plants. The end
products are not just glucose, but complex organic molecules
such as carbohydrates, amino acids, lipids and nucleic acids.
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Leaves and photosynthesis
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Plant anatomy
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Location of the reaction
The light-independent reaction takes place in the stroma of
the chloroplasts.
The light-independent reaction can also be called the “dark
reactions”, or the Calvin Cycle.
The reaction consists of a cycle of enzyme-controlled
processes making complex molecules such as carbohydrates.
stroma
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