- Mitochondria are cylindrical or sausage-shaped double membrane-bound organelles which are distributed in the cytoplasm. The outer and inner membranes are the two membranes that surround them.
- A single circular DNA molecule, a few RNA molecules, 70S ribosomes, and the components needed to make proteins are all found in the mitochondrial matrix.
- Due to their capacity for self-duplication through the presence of mtDNA, mitochondria are also referred to as semi-autonomous cell organelles.
Hence, the correct option is 1).
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