Question

question 12 (2.5 points)
the presence of circular dna in mitochondria and chloroplasts suggests that these organelles evolved from _.
bacteria
nuclei
single celled eukaryotes
aerobic microorganisms
archaea

Explanation:

The endosymbiotic theory suggests that mitochondria and chloroplasts were once free - living bacteria. Bacteria have circular DNA, which is also present in mitochondria and chloroplasts. Nuclei have linear DNA. Single - celled eukaryotes have a nucleus with linear DNA. Anaerobic microorganisms do not explain the presence of these organelles in a symbiotic relationship. Archaea have different membrane and cell wall structures compared to what is seen in mitochondria and chloroplasts.

Answer:

bacteria