Multiple Choice
What is the endosymbiotic theory?
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5. Cell Components
Endosymbiotic Theory
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What event is thought to have contributed to the evolution of eukaryotes according to the endosymbiotic theory?
A
The mutation of prokaryotic cells to form organelles
B
The development of a nuclear envelope in prokaryotic cells
C
The engulfment of aerobic bacteria by ancestral prokaryotic cells
D
The fusion of two prokaryotic cells to form a eukaryotic cell
Verified step by step guidance1
Understand the endosymbiotic theory: This theory suggests that eukaryotic cells originated through a symbiotic relationship between different species of prokaryotes.
Identify the key event in the endosymbiotic theory: The engulfment of aerobic bacteria by ancestral prokaryotic cells is considered a pivotal event.
Recognize the significance of engulfment: The engulfed aerobic bacteria eventually evolved into mitochondria, providing the host cell with enhanced energy production capabilities.
Consider the evidence supporting this theory: Mitochondria have their own DNA and double membranes, which are characteristics similar to those of prokaryotic cells.
Reflect on the impact of this event: The acquisition of mitochondria allowed eukaryotic cells to become more complex and efficient, leading to the diversity of life forms we see today.
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