What is the structure of the chloroplast?

by Shleigh
(Lisburn)

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Structure of Chloroplasts
by: Anonymous

Chloroplasts are oval in shape, of the size of 2 to 10 micrometers in diameter, and 1 micrometer thick and restricted by cell membranes, the outer cell membrane and the inner cell membrane. The space between these two is called the inter membrane space and helps give a definite shape to these organelles. The inner structure is pretty complex and largely consists of two parts, the stroma and the grana. Stroma is the aqueous fluid present with the chloroplasts, comparable to the cytosol of a cell. This is the key site wherein dark reaction of photosynthesis occurs. Grana, on the other hand, are present in the form of thylakoids arranged in bundles and appear as discs under the microscope. These are connected to each other with the aid of intergranal lamellae. This is the primary site for the light reaction of photosynthesis.

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