According to the theory of endosymbiosis, organelles, like mitochondria and chloroplasts, were once free-living cells that were absorbed into another cell. The relationship benefited both cells to stay together. What evidence do scientists observe today that supports the theory of endosymbiosis? Select all that apply. Mitochondria and chloroplasts are found inside all cell types.

Mitochondria and chloroplasts each have a membrane around them just like a cell would.

There are ribosomes found inside mitochondria and chloroplasts just like there are inside cells.

Looking inside mitochondria and chloroplasts, one will find that they each contain their own DNA.