Why mitochondria are called semiautonomous cell organelle
Cell organelles which contain their own DNA and replicate independently of the nucleus are said to be semi-autonomous. Mitochondria have their own DNA which can replicate independently. Mitochondria are partly independent or semi-autonomous as they can manufacture some of the proteins required for their functioning with the help of their DNA, RNAs, enzymes, and ribosomes and obtain the others from the cytoplasm formed under the control of the nuclear DNA. The organelles possess their own ribosomes, called mitoribosomes.