Support for the endosymbiotic hypothesis is provided by all of the following EXCEPT
A) double membranes around mitochondria and chloroplasts.
B) mitochondria and chloroplasts have their own genomes.
C) mitochondria and chloroplasts can synthesize proteins.
D) mitochondria and chloroplast ribosomes are encoded by genes that are very similar to bacterial ribosome genes.
E) mitochondria and chloroplasts contribute to different metabolic processes in the eukaryotic cell.

Question

Quizplus · Accepted Answer

This statement does not provide support for the endosymbiotic hypothesis. The endosymbiotic hypothesis proposes that mitochondria and chloroplasts originated from prokaryotic cells that were engulfed by a larger eukaryotic host cell. The other statements (A-D) all provide evidence that these organelles have features that are similar to bacteria, supporting the idea that they were once independent organisms that were later incorporated into eukaryotic cells.

Support for the Endosymbiotic Hypothesis Is Provided by All of the Following