Five true statements about mitochondria and/or chloroplasts are given.Which statement could be considered evidence that supports endosymbiotic theory?
A) Mitochondria and chloroplasts are both involved in energy metabolism in eukaryotic cells.
B) Mitochondria and chloroplasts cannot be grown in culture, free of a host cell.
C) Mitochondria and chloroplasts have DNA and ribosomes.
D) Most of the proteins used by the mitochondria are synthesized in the cytoplasm and transported into the mitochondria.
E) Mitochondria and chloroplasts are membrane-bound structures.

Question

Quizplus · Accepted Answer

The presence of DNA and ribosomes in mitochondria and chloroplasts provide evidence for endosymbiotic theory. According to the theory, these organelles were once free-living bacteria that were engulfed by a larger host cell and developed a symbiotic relationship. The fact that they still have their own DNA and ribosomes supports this theory.

Five True Statements About Mitochondria And/or Chloroplasts Are Given