Redirected from Chloroplasts
The structure and biochemistry of chloroplasts are also similar to those of cyanobacteria. Carbon dioxide is converted into carbohydrates via the Calvin cycle, which takes place in the stroma. Thylakoids, tiny membrane-enclose sacs, are present, and in most forms are arranged into stacks called grana. The thylakoid membranes are the site of photosynthesis, converting the energy of light into ATP and oxidizing water to oxygen. The photosynthetic proteins in the membrane bind chlorophyll, which is present with various accessory pigments. These give chloroplasts their colour, which may be green, golden, brown, or red.
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