Life: The Science of Biology 11th Edition

Published by W. H. Freeman
ISBN 10: 1-31901-016-4
ISBN 13: 978-1-31901-016-4

Chapter 5 - Cells: The Working Units of Life - 5.5 - Euaryotic Cells Evolved in Several Steps - 5.5 Recap - Learning Outcomes - Page 107: 2

Answer

The endosymbiosis theory outlines how a prokaryotic cell engulfed another prokaryotic cell and maintained a symbiotic relationship with it. The ingested cell eventually lost its autonomy and evolved in a way resembles modern chloroplasts and mitochondria. This is supported by the fact that these organelles have lipid membranes and their own DNA.

Work Step by Step

The endosymbiosis theory outlines how a prokaryotic cell engulfed another prokaryotic cell and maintained a symbiotic relationship with it. The ingested cell eventually lost its autonomy and evolved in a way resembles modern chloroplasts and mitochondria. This is supported by the fact that these organelles have lipid membranes and their own DNA.
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