Biology

Both mitochondria and chloroplasts are double-membrane organelles found in eukaryotic cells. They each have their own distinct DNA and ribosomes, allowing them to produce some of their own proteins independently of the cell's nuclear DNA. These organelles are crucial for energy conversion in the cell: mitochondria are involved in cellular respiration, where they generate ATP, while chloroplasts are responsible for photosynthesis, converting light energy into chemical energy stored in glucose. This similarity supports the idea that both organelles were originally independent prokaryotic cells that became symbiotic with eukaryotic cells, a theory known as endosymbiosis.

The other options are incorrect:

Option A: Chloroplasts a...