In addition to chloroplasts, which of the following organelles of eukaryotic cells is believed to have originated by endosymbiosis?
A)lysosomes
B)mitochondria
C)endoplasmic reticulum
D)ribosomes

Question

Quizplus · Accepted Answer

Mitochondria are believed to have originated from endosymbiosis, just like chloroplasts. This is supported by the fact that they have their own DNA, can replicate on their own, and have a similar structure to certain types of bacteria. Lysosomes, endoplasmic reticulum, and ribosomes are not believed to have originated by endosymbiosis.

In Addition to Chloroplasts, Which of the Following Organelles of Eukaryotic