Nucleus and chloroplast are organelles that contain DNA and have a double membrane.
Mitochondria or the power house of the cell contains double membrane and have their own small genome . They also divide independently in the cell cycle by simple fusion .
Chloroplast is bounded by a double membrane called the chloroplast envelope, they also have third inner membrane called thylakoid membrane . These structure are double membrane and are believed to be originated when all the living thing had single membrane structure .
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