Question

select all the evidence used to support the endosymbiont theory. there are similarities in photosynthetic pigments in chloroplasts and cyanobacteria. mitochondria and chloroplasts divide in a way that is similar to bacterial division. there are similarities in the size, shape, and membrane structure of chloroplasts, mitochondria, and bacterial cells. protists, mitochondria, and chloroplasts all have similar cell walls. chloroplasts and mitochondria contain dna, rna, and ribosomes, which are similar to those in bacterial cells. a single membrane surrounds chloroplasts and mitochondria

Explanation:

The endosymbiont theory posits that mitochondria and chloroplasts were once free - living prokaryotes that were engulfed by a host cell. Similarities in photosynthetic pigments between chloroplasts and cyanobacteria suggest a common origin. The similar division mechanism of mitochondria and chloroplasts to bacteria indicates their prokaryotic heritage. Similarities in size, shape, and membrane structure of chloroplasts, mitochondria, and bacterial cells support the theory. The presence of DNA, RNA, and ribosomes in chloroplasts and mitochondria similar to those in bacteria is also evidence. However, protists don't have cell walls like bacteria, and mitochondria and chloroplasts have double - membranes, not single - membranes.

Answer:

There are similarities in photosynthetic pigments in chloroplasts and cyanobacteria.
Mitochondria and chloroplasts divide in a way that is similar to bacterial division.
There are similarities in the size, shape, and membrane structure of chloroplasts, mitochondria, and bacterial cells.
Chloroplasts and mitochondria contain DNA, RNA, and ribosomes, which are similar to those in bacterial cells.