Describe Structure And Functions Of The Chloroplast?

The membrane-bounded pigment containing bodies present in the cells are called as plastids.The photosynthetic cells of algae and plants have membrane bound structures called chloroplasts. They are self-replicating organelles. They contain a green pigment called chlorophyll, which helps the cell to absorb light energy and utilize it to manufacture food. Chlorophyll molecule resembles the haem group of hemoglobin, a protein used in the transport of oxygen. The main difference between these two molecules is that chlorophyll has magnesium ions while haem has iron ions as the central atom.

Chloroplasts vary in their shape and size with a diameter of about 4-6 micron and 1-5 micron in length. Under light microscope they appear to be heterogenous structure with small granules known as grana embedded in the matrix.Under electron microscope a chloroplast shows three main parts, the envelope, the stroma and the thylakoid. A double membrane forms the envelope, while stroma covers most of the volume of the chloroplast. Stroma is a fluid, which surrounds the thylakoids and contains proteins, some ribosomes and a small circular DNA. It is in this part of the chloroplast where CO2 is fixed to manufacture sugars.

Some proteins are also synthesized in this part. Thaylakoids are the flattened vesicles, which arrange them to form grana and intergrana. A granum appears to be a pile of thylakoids stacks on each other like coins. Granum appears to be green. Each granum is inter connected with other by non-green part called intergranum. Membrane of the grana is the site where sun light energy is trapped and where ATP is formed.

Describe structure of the chloroplast?

What the hell is the stricture and function of Chloroplast cause i am making a model of Chloroplast and it worth like 100% of my grade sad face... Help me guys pl0x