Question

multiple choice 6.15 points which of the following bacterial types is most closely related to the ancestor of mitochondria? gram negative bacteria gram positive bacteria cyanobacteria purple - sulfur bacteria

Explanation:

The endosymbiotic theory suggests that mitochondria originated from purple - sulfur bacteria or related alpha - proteobacteria. Gram - negative bacteria is a broad category and not the most specific answer. Gram - positive bacteria are not related to mitochondrial ancestry. Cyanobacteria are related to the origin of chloroplasts, not mitochondria.

Answer:

Purple - Sulfur Bacteria