Ribosomes are found in bacterial cells, in the cytosol of eukaryotic cells, and in the mitochondria and plastids of eukaryotic cells.It has therefore been of interest to researchers to do comparative studies of ribosomes isolated from these locations as a way to test endosymbiotic theory.Which type of comparative information would be most likely to provide evidence that could either refute or support endosymbiotic theory?
A) Function of the ribosomes in their source locations
B) Structure of the ribosomes
C) Number of ribosomes per unit area
D) Ability of the ribosomes to translate a given messenger RNA molecule
E) Ability of the ribosomes to form peptide bonds

Question

Quizplus · Accepted Answer

The structure of ribosomes can provide evidence for the endosymbiotic theory because if ribosomes in mitochondria and plastids are more similar to those found in bacteria than to those in the eukaryotic cytosol, it supports the idea that mitochondria and plastids originated from endosymbiotic bacteria.

Ribosomes Are Found in Bacterial Cells, in the Cytosol of Eukaryotic