Which two organelles do scientists use as evidence for the endosymbiotic theory? nucleus golgi apparatus mitochondria lysosome ribosome chloroplast

## Step 1<br />The endosymbiotic theory is a scientific theory that explains the origin of eukaryotic cells from prokaryotic organisms. This theory suggests that eukaryotic cells evolved from a symbiotic relationship between different types of prokaryotic cells.<br /><br />## Step 2<br />According to the endosymbiotic theory, mitochondria and chloroplasts were once free-living prokaryotic organisms that were engulfed by a larger cell. Over time, these engulfed organisms became an integral part of the larger cell, eventually evolving into the organelles we know today as mitochondria and chloroplasts.<br /><br />## Step 3<br />Mitochondria are responsible for producing energy in the cell, while chloroplasts are responsible for photosynthesis in plant cells. Both of these organelles have their own DNA, which is similar to the DNA of prokaryotic organisms, providing evidence for the endosymbiotic theory.