Fossil Prokaryotes Resemble Modern Rod-Shaped Bacteria

question 239

Multiple Choice

Fossil prokaryotes resemble modern rod-shaped bacteria.What appears to be a first step in the evolution of the modern eukaryote cell from a prokaryote ancestor?

• A) Formation of a nuclear envelope
• B) Endosymbiosis resulting in acquisition of a mitochondrion
• C) Loss of the stiff cell wall of bacteria
• D) Development of organelles studded with ribosomes
• E) Endosymbiosis resulting in acquisition of a chloroplast

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