Question

What is NOT evidence of

mitochondria and chloroplast once
being free organisms?
A. They both have their own organelles.
B. They both have their own DNA and ribosomes.
C. Their DNA and ribosomes are similar to
prokaryotic cells.

Answer 1

Both mitochondria and chloroplasts have their own DNA. This DNA is circular as is a prokaryote's and is not the same as the cell's DNA. They both divide by binary fission on their own schedule. Their ribosomes are more like prokaryotic ribosomes. The inner membrane of mitochondria and chloroplasts is more like a prokaryote.