14) The evolution of eukaryotic cells most likely involvedA) endosymbiosis of an aerobic bacterium in a larger host cell-the endosymbiont evolved intomitochondria.B) anaerobic archaea taking up residence inside a larger bacterial host cell to escape toxicoxygen-the anaerobic bacterium evolved into chloroplasts.C) an endosymbiotic fungal cell evolved into the nucleus.D) acquisition of an endomembrane system, and subsequent evolution of mitochondria from aportion of the Golgi.

Answer - Option A - Endosymbiosis of an aerobic bacterium in a larger host cell - the endosymbiont…

Answered: The evolution of eukaryotic cells most…

Science

Biology

The evolution of eukaryotic cells most likely involved

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter27: Protists

Section27.2: The Protist Groups

Problem 1SB: What is the evidence that the metamonads, which lack mitochondria, derive from ancestors that had...

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Concept explainers

Prokaryotic evolution

The term evolution means the gradual change or a transformation from a simple or primitive state to a complex or advanced state. Prokaryotic evolution is a concept that involves the evolution of the form and function of most primitive organisms (prokaryotes) through several stages and changes to form diverse life as a part of organic evolution.

Question

14) The evolution of eukaryotic cells most likely involved
A) endosymbiosis of an aerobic bacterium in a larger host cell-the endosymbiont evolved into
mitochondria.
B) anaerobic archaea taking up residence inside a larger bacterial host cell to escape toxic
oxygen-the anaerobic bacterium evolved into chloroplasts.
C) an endosymbiotic fungal cell evolved into the nucleus.
D) acquisition of an endomembrane system, and subsequent evolution of mitochondria from a
portion of the Golgi.

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Analyses of genomes have allowed researchers to determine that some cells have very small genomes. If you were asked to predict which organisms are likely to have smaller genomes than others, which option below would be MOST likely? A. Bacteria that live in plant hosts are likely to have smaller genomes than those that live in animal hosts as it takes a smaller variety of metabolic processes to survive in an animal host. B. Although less is known about Archaea than about Bacteria as fewer species have been studied, it is likely that Archaea have smaller genomes on average than Bacteria as they have fewer metabolic needs. C. Bacteria that are endosymbionts, living within a host, can survive with smaller genomes than free-living Bacteria because they can rely on their host for many of their needs. D. Protists generally have had smaller genomes than Bacteria because Bacteria have such large amounts of noncoding DNA.
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