Question

question 19 select the observation that supports endosymbiotic theory. mitochondria and chloroplasts contain dna just like prokaryotic cells. nuclear envelopes have small openings called nuclear pores. eukaryotic organisms can be either unicellular or multicellular. plant cells and many prokaryotes have cell walls surrounding the plasma membrane.

Explanation:

Endosymbiotic theory suggests mitochondria and chloroplasts were once prokaryotes. Their possession of DNA like prokaryotes supports this.

Answer:

Mitochondria and chloroplasts contain DNA just like prokaryotic cells.