Which statement can be used as evidence for the endosymbiosis theory?
A) Mitochondria and plastids have DNA that encodes some proteins used by the organelles.
B) Internal membranes are the sites of photosynthesis in photosynthetic prokaryotes.
C) Vacuoles are membrane-bound organelles that store toxic molecules and waste products.
D) Compartmentalization of individual functions in separate organelles allows eukaryotes greater ability to carry out a wide diversity of functions.
E) In eukaryotes, the endoplasmic reticulum is continuous with the nuclear envelope.

Question

Quizplus · Accepted Answer

Mitochondria and plastids having their own DNA that codes for some of their own proteins supports the endosymbiosis theory, which proposes that these organelles were once free-living prokaryotes that were engulfed by a larger cell in a symbiotic relationship. The presence of their own genetic material suggests that these organelles were once independent organisms.

Which Statement Can Be Used as Evidence for the Endosymbiosis